This is a partially specific Suggestion so let’s start with the simple part:
I’d love more furniture, especially more and larger paintings. Just more stuff that fills the walls and rooms. With that in mind, it would also be great to be able to add more walls into your Apartment / Store to change the Layout slightly - I currently use bookshelves for that in my apartment.
I’d also love to see some bathroom furniture and with that perhaps a hygiene stat. You could have a shower at home that maxes your hygiene and you could be able to use the toilets at your stores to regenerate hygiene by 25% or similar.
Oh and it would be great to have more Wardrobe styles & Kitchen furniture (e.g. a smart fridge)