Why is there so little wallpaper and flooring in the game even in the expansions?

I basically miss more standard wallpapers, delicate patterns and not the bold stuff that we mostly get. I want wallpapers that can be used in multiple houses, floral patterns etc. Typical bedroom or living room, with 5-10 color swatches each version would make wonders :) But I would rather have different prints with each floor trim versions, than one print and x trim alternatives. Eventually one version with no trim at all, in a bedroom that would still work well. Meanwhile I use many cc walls, and I also created some floral designs myself.