I have two suggestions that would make the game a lot more pleasant to play;
Invisible Doorways-
This can eliminate the complexity of making different shaped rooms, including making more way for creativity. Instead of a standard single and double doorway, the two wall units are completely gone with no rim.
This not only can make L-shaped and other future rooms a lot less complicated, but it also allows for more creativity because they are considered separate rooms so you could have different wallpapers and floors. This would be a big feature that could change the future of the game. You could make studio apartments with a different floor for the kitchen, or just make it so there are partitions that are actually not completely see-through.
Of course, this would be in a separate built mode and things such as mezzanines or furniture could not interact with the invisible doorway.
Apartments or “Apartment mode”-
Realistically, a sim wouldn’t be able to afford a house, or maybe they don’t want to live the luxury life in a penthouse. There are some great opportunities downtown for apartments, luxury or not. Alternatively, there could be an “apartment mode” where you can create apartments on house plots, but the Sims don’t share the same surnames.
Thank you for taking the time to read this!