Asking the developers directly might be a good idea. Facebook, twitter and perhaps their websites could be a good place to try. I really don't understand why we don't at least get costumes.
There are so many game costumes that would sell in Home. Sure games and lounges would be desirable. Naughty Dog did a nice one with their Uncharted 3 space.
I hope so. Id be happy with just 1 new outfit honestly. Heres some links to their twitters.
Ubisoft Montreal This is the studio that develops the AC franchise.
Ubiworkshop These guys handle the merchandise but they are part of the Montreal team.
UbiGabe This is a dev at Ubisoft Montreal