(Not in any order except #1)
1. Fixtures don't get deystroyed : Nogthing better than finally being able to toy with different wallpaper/flooring combos.
2. Stack size to 999.
3. Submarines
4. Glamours - I know people still think its not great, but being able to keep my gear the same as I level up is what most people were looking for.
5. Housing demo back.