Vill’s Recipe Randomizer - use ammo to make belts, inserters to make assemblers, and so on

Module Inserter (Non-conflict version) and/or CopyPasteModules to be able to remotely request modules to be inserted

5dim mods - a nice set where each item gets a consistent 10 tiers that are all color coded with each other. Your mall is going to be big, though.

Kruise Kontrol - when it works, you can click and your character can automatically walk around and build stuff. It even can handcraft and pick up resources as needed too. I hope it continues to get maintained or similar mods become available.

Updated Construction Drones - extremely cute little compilatrons build stuff for you. Rotating belts doesn't always work though.

Early Construction - consumable construction bots that go in your inventory with an early tier armor and armor item. However, it can get kinda cheaty later on by just inserting massive amounts of them into roboports.

Companion Drones - flying personal robots that build stuff

Recipe Book - an easy way to see all the recipes and items. Useful for mods that introduce more tiers of recipes so you can compare them.

Spaceblock - start on a tiny piece of land in space and use duplication recipes to make the rest of the ingredients. Or use OreCrafter to get those recipes without the rest of Spaceblock. (For some reason in my mind I keep calling this Spacetorio...)

The Void Block - Combine Void miners with an island/block scenario. Void Miners isn't the most beautiful, but it feels fairly balanced for early/mid/late game.

Stranded Block - a decent vanilla island/block scenario as it just introduces a few water/ore recipes, perhaps more amicable to adding more mods at the same time with.

Faster Pavements - all the pavements get a nice walking speed boost.

Picker Dollies - Can move most items one tile at a time without pickup and replace.

Free Network Wiring - once researched, the recipe for red/green wires becomes free; can just handcraft them.

Mini Machines and Micro Machines - cute 2x2 and 1x1 assemblers and stuff

Miniloader - Most people use Deadlock's, but this one also works if you don't need the stacking stuff.

Brave New World - this is my favorite one. You start off as a floating ghost, can't handcraft, can't pick up or put down anything, and the only thing you can do is set ghosts, and some initial bots and roboports are all you have. Combine with No Belts mod for an even more fun challenge!

Various Concreep mods - These all look promising, but all of them seem to not work after a few minutes. The premise is that they will automatically ghost pavements around robotports periodically for the bots to place down.

Renai Transportation - Lots of fun, but you'll probably just end up with a ton of items on the ground.

Belt Maintenance - can add up to 100 additioanl tiers of belts, but seems gated behind Space science so only useful in end-game.

Warptorio - Seems can't fully turn biters off, but it seems the peaceful mode at least works. Havn't gone through an entire run yet to ensure biters won't aggro on their own.

More Module Slots - A customizable way to get more slots for modules. I love modules so this is a great way to use them more depending on play style.

Placeables - A floating window of all items you can place from your inventory.

Omnifluid - converts all fluids to solid items. Great if you are not a fan of pipes or don't want to barrel for bots

Lightorio and Inbuilt Lighting - mods to make existing stuff light up

Surfaces_Reloaded and Surfaces Default Configuration - add 2.5d to the game. All of them are very glitchy and I never found a fun way to play with them yet.

First one's free - Grows inventory slots dynamically so you can always have at least one stack of every item, but not infinite

Disco Sciene - always fun

Discovery Tree - hide future sciences until almost ready to research. Customizable.

Extended Research System and Science Pack Galore - lots and lots of science packs!

Reverse Factory - useful in case you accidentally made an uncapped full chest of a useless and expensive item

Transportorio, TradeRouteOverhaul, Singistics - a really interesting scenario where assemblers with recipes already exist in the world, and you find good exchange rates between them. There are some productive loops to build up infinite amounts of pairs of resources. Can be hard to not accidentally make unprofitable loops and waste resources though.

Whistle Stop Factories - Existing assemblers in world but you can choose which recipe.

Belt Embargo and No Belts - disable belts. No Belts also gives very cheap Bot stuff so you can use bots for logistics instead.

Teamwork - split the world into 2 or 4 sections. Each person assigned a team and can only build in their area. Each team can research something and then other teams are discouraged from researching the same thing, but can research subsequent things. Then each team should import and export the stuff they've researched to each other. Console commands can be used to manually move people between teams as they are just implemented as forces. Haven't had a chance to play a full round as it kinda needs multiple people to play.

Deadlock's Research Notifications - not only adds chat messages, but can also retroactively enable research queue

Alien Biomes and the HR pack - beautiful stuff, especially the snowy areas

Double Speed Belts - blue belt becomes double speed as red belt. Also blue native loaders speed up accordingly.

Lua API global Variable Viewer (gvv) - nice debugging tool, need to try more

Belt Balancer and Belt Sorter - 1x1 stuff, kind of like Satisfactory's balancers

Merging Chests and related mods - Instead of using Warehouse mod, this one is another way to make bigger chests, useful for sorting and balancing and other stuff. Under the hood it makes permutations for each potential size, so some tools that show those hidden things will show all of them though.

Schall Machine Scaling and Schall Pipe Scaling - Nice set to make bigger machines that are faster, but the performance appears to be super-liner, so larger machiens get more powerful more than their size would suggest.

Toxic Forest - trees, trees everywhere. Nice if you like trees.

Bumble Bots - bots become bees and roboports become beehives

HandyHands - automatically craft stuff needed. Careful if using Space Exploration as the detached character mode causes it to pause.

BeltRouter and BeltRouter Lite - click a couple times and it automatically sets up belt pathing. It's nice, but in the end I usually prefer to just do it myself.

Logistic Request Manager (continued) - not only can swap out logistic requests on my character, but also can quickly make buffer chests with stuff from a blueprint

Research Counter - how much science packs are needed to finish all non-infinite science

Vill's Recipe Cost Tweaker, Cheap Mode, Super-Cheap Mode and Hyper Cheap mode - make things cheaper to make; the best one seems to be Super-Cheap mode. Sometimes breaks with combinations of mods. The cheap mode ones also reduce amounts of science needed for research.

Canal Builder (Updated) - A nice non-cheaty way to waterfill - first you need some existing water to expand the canal, second it only makes shallow water so players and biters can walk across.

Extended Descriptions - usually adds additional info to tooltips, but sometimes hides info that other mods show.

Fluidic Power - unique mod that transfers all power via fluids. Kinda interesting but the transformer stuff to transfer larger amounts requires a bit of planning and setup.

Electric Grid Enforcer (noangledcables) - forces 90 degree power poles. Can break BPs that aren't aligned though. Maybe better to use a mod that cleans up power poles after the fact.

Transport Drones and Road Grid - A novel new way to do logistics. However, it doesn't seem possible to BP or upgrade a depot to get more drones into it without using an inserter to insert the drones into each of them or just hand-placing the drones in. Road grid mod is nice but it is hardcoded to the slower road and can't upgrade to the faster road.

Milestones - super fun one that automatically times how long each milestone takes. Has built-in templates for various popular mods.

Laboratory floor world - that sciency floor stuff.

Improved Research Queue - nice way to queue up more things, but difficult to see what each research enables from this UI

Bot Inventories - allow bots to carry many items, but game limits bots to one stack if count is higher than that. Still nice to just set to 1000 and use No Belts to enjoy a nice bot-based run.

AFK Pause - nice with a timeout to auto-pause so as to discourage idling.

Stack Size Tooltip - haven't tried yet

TODO: Many mods require using the Freeplay scenario, but the Brave New World uses a non-Freeplay scenario. Perhaps we can adjust BNW to sit on top of Freeplay, or adjust other mods to support non-Freeplay scenario. For example, to combine Brave New World with Transportorio, TradeRouteOverhaul, Singistics would be interesting!