Ok heres the concept it comes in two Flava's:
Flava A: Channel Update/New Channel
Buy the channel and it allows you to dress up your Mii and view other Dress up Miis.
Flava B: Game and Channel
Does what Flava A does but is a compilation of minigames as well. Be around full price but would roll Wii Sport and Wii Play together. Also it would add a number of new sports and mini-games. These combined with possible other factors, like Poll participation or new games etc., allow you to unlock and purchase clothes.
In my version you would be able to buy clothes in 2 forms: Manual and Automatic.
Automatic: Cost more then Manual clothes but they just sort of pop onto your Mii, like Super Swing Golf.
Manual: Would be cheaper then Automatic but, to dress your Mii with these sort of clothes you would play a sort of dress up mini game. (Think about if you Mii is wearing a corset you would tread and tighten the corset.) Obviously somethings, like putting on a t-shirt, have no real mini-game equivalent but I'm sure something could be come up with.
This collection of Mini-games would be the largest of the Mii featuring minigames to date.
Also I would have expansion packs, like card booster packs, that can be bought for like 100 points on the Shopping channel.
Just see'n what everyone thinks.