I'd like it if objects would get worn out in time, so you'd have to buy new ones. I mean, no one still sleeps in the same bed as their grandparents did when they were young.
I want to build houses closer to eachother.. Like rowhouses! I am really curious as to how the lots(and lot boundaries) will work, now that the whole 'hood is open.
Something nifty with curtains would be lovely. They would snap together like swings, so you'd be able to have more-tile-curtains, and they would close at night- something like the lights, where you can set them manually or leave them automatic. Yay! Curtains make houses so much more homey.
And some really cute casual interactions.. cuddling in front of the fire.. leaning over the fence.. sitting in the window.. opening the door for visitors and showing them in.. cosily snuggled up in a chair, reading.. Oooh...
Those are perhaps too much, but one can always hope