Hello!
There are alot of frustrating things when it comes to trying to decorate your house in FFXIV- to get any specific look, you'll most likely have to glitch items to high heaven just to replicate floating, fancy kitchen cabinets for example which can take up a nasty amount of Housing item limits.

Want a bay window? Combine 3+ windows & there are abunch of items slots you wouldn't of had to waste if there were premade Bay Windows already in game.

Alot of ideas come to mind when I think of bettering the decorations & build mechanics we already have --
One such item is an inverted stairwell wall, or Slanted wall that can cover the gap/giant space underneath placed stairs. I'll just make a list of items that could improve QoL for house decorators.

-Inverted or Slanted Wall Partition

-Arch/ rounded Doorway (with a matching, rounded dye capable door)

-Dyeable Brick Partition

-Stairwell Partition that comes in Small, Medium or Large (it would have the grooves to fit nicely under stairs)

-Stairwell Partition with a Door (For the tiny room to shove Potter in)

-Premade Small, Medium & Large Bay Window

- Fancy Drapery, complete with tassles!

-Inverted/ Slanted Stair or guard Rails

-Marble Partitions you can apply wallpaper to

-Dyeable Brick anything (brick doesn't just come in Red SE)

-Arch/ Rounded windows that don't have indoor shutters


That completes my list for now!