I hope we still have the mansion and all the exterior decorations, but I'd really like them to add a garden. I'm not sure how or if they could add other rooms, but being able to choose a floor plan would be quite cool!

I'd like to be able to have custom floor plans. I've been bothered by how all rooms have to branch off of the main room of your home as it prevents you from utilizing natural lighting in the main room.
I'd like to branch a room off of the upper or side room instead. Limit us to the same amount of rooms, but let us choose where they should branch off at.
For example, I'd like the following floor plan on my first floor:
View attachment 221057
Notice how there's an extra room? I'd like to have an extra room on the first floor instead of a basement. Again, I want natural lighting in every room! No damp basements for me.
It'd be even better if it limited you by floor space instead of rooms. I haven't fully expanded my home in New Leaf, despite having more than enough money, because I'm comfortable with the room sizes that I have now. Especially my bedroom, as 6x6 is the perfect size and any bigger would ruin the cozy feeling. If you could have a max amount of floor space instead of a max amount of rooms then that'd be perfect!
- - - Post Merge - - -
Oh right, and they could allow you to have extra rooms in the basement or attic as well! An idea that a friend of mine had was to have a bunch of tiny, 4x4 rooms in their basement and turn it into a large catacomb or mineshaft.
speaking on exterior remodeling, they should give us a catalogue of that stuff too
anything we've gotten at least once before can be rebought without having to wait for it to be up on display again somewhere
Different sized rooms instead of the standard 8x8 (can I get uhhhhh a circular room please), rugs, curtains, and light fixtures - everything from hhd basically
Oh it'd also be neat if they added different house shapes/styles (the ones from new leaf were kind of ehhhh and I usually ended up sticking with the standard model) id love something super cottagey like the villager houses in city folk and wild world