Here's some of my ideas (like many others, much simmilar)

【 Mooghouse / Company House: 】
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◇ Including recipe for furnitures, Decorations
◇ Company Bank / Shared Storage option. (Bank-vault style)
◇ Company Shop / Shared shop. (For buying food, mats etc)
◇ Company Insignia / Battleflag Insignia (Gives party buff)
◇ Interior Themes for Company houses / including music themes.
◇ Furnitures: Chairs / Tables / Storage Boxes / Fish-tanks...etc
(Also being able to sit on the crafted chair, etc)
◇ Minigame for company house, like.. "Poke the fishtank" for reward. (or something)
◇ Company flag / Banner in House. (or Wooden plate with LS / Company name on)

(notes taken from my personal "Wanted" list.)