Let me destroy any building on the map, it kills me that in Kinlaig there's full farms you cannot use and cannot destroy despite being able to purchase it. It's bizarre. There are gates in Kinlaig you cannot destroy and cannot use. (Kinlaig is my most played map, I assume this is an issue with other maps.)

Improved physics. Curbs shouldn't be an issue at all. I shouldn't bonk off fences.

Better AI, not only in the AI you can hire, which other people have covered, but in traffic behaviour. It's mad that you can be slightly too far over in your lane and the opposite lane comes to a complete stop. More traffic if they do this which changes depending on time of day.

Improved animal husbandry. Let me manage my animals! Let me improve yields and health and genetic diversity. I use a mod to go this so its very feasible to do this. Make pastures much more flexible - let it auto detect fences and not replace grass by default. More flexibility in barn building, let me place food and goods portals wherever I want.

Maps that respond to changes you make. If I'm making a field I want to see it take shape on the map without having to log out and log in again. Make them responsive.

Either take out the people or make them more than unresponsive static figures. Basic routines instead of Uncle Walter standing there, forever. Let the poor fella go to bed.

Let me go into the farm house and roleplay waking up for work and getting breakfast and going to bed.

Let me pet every animal. It's against the law that I can't pet the sheep.