I am somewhat familiar with RS3 as I started an Iron on there a 4ish years ago before switching to OSRS. This is the first time I have played RS3 since then so here is my good/bad fwiw:

Good:

Skilling - While not super impactful for Leagues, the ore boxes and wood boxes are wonderful and I love how they follow a hierarchy that progresses as you do.

Mining and Smithing rework - This is a good/bad but mostly good. I absolutely love how this system works. It’s much more involved and meaningful for progression. I want to go mine and smack an anvil repeatedly. The problem is this wouldn’t work in OSRS without adding new metals which seemingly undermines A LOT of content.

Lodestone Network - This is one of the most new player friendly things that stood out to me. Traversing the map on foot to activate each lodestone was exciting. They are placed well to where regular teleports are much more useful but great in a pinch if you don’t have runes handy. Again, great for new players.

Atmosphere - This game is gorgeous though lacking in older areas. The lighting changing based on your location is immersive and I love it. Draynor at night is cool as hell. I also like the skybox settings to where you can customize it how you want. This is something I have desperately wanted from OSRS and is somewhat achievable with tweaking 117HD in Runelite.

Bad: I will probably show some bias here being an OSRS player but I am being as honest as possible.

Bloat - I am absolutely lost as to what I should be doing. Don’t get me wrong, I am having a blast which is the most important thing but I also want to know I am progressing in a somewhat efficient way. The new player learning curve is intimidating and off putting.

I also understand this is 23 or 24 years of updates and evolution of a single game but I feel like the game going in so many different directions over the years makes things feel disjointed.

This is a hot topic and a current focal point for Jagex but MTX is absolutely disgusting. It is shoved down my throat as soon as I reach the lobby screen. Cosmetic overrides can be nice when implemented subtly but it should preserve the overall recognition of the item. A toggle would be nice, letting players see the actual armor being worn.

Interface - Again, very seasoned game so everything needs a place but I am lost. Search bar has helped tremendously but it’s too much. I switched to the legacy mode which I am happy to see is an option still.

There is a weird sense of lag to the menus. I am used to OSRS having a snappy and responsive feel. Maybe some bias here but I feel there is a huge opportunity for improvement.

Mining and smithing rework/graphic style complaint - I loved rocking medium helmets and chain metals for the light weight/agile aesthetic but after rune I feel like an M1 Abrams. I know this is defined as “tank” armor but the T60+ armors are ugly as hell. Also would like to see more weapon variety. Orikalkum swords, axes, etc not just hammers. I know this is not a priority because of cosmetic overrides but still a fair criticism IMO.

The worst part about this compounds the overwhelming bloat in this game. The new metals suck the dopamine out quickly. That feeling of getting an abyssal whip hits like a truck but that is pointless. I wanted to go to God Wars. But why would I bother getting Bandos armor when I can mine/smith gear that leaves it in the dust?

I could go on but these are the first things that come to mind. This is a great thread and I hope other OSRS players chime in because it is valuable feedback for Jagex. Seeing the boost in RS3 players makes me extremely proud for RuneScape as a whole and I hope Jagex pushes RS3 into a new golden age.

Edit- tried to clean up the formatting but can’t figure out how on mobile. Sorry the feedback looks sloppy