It'd be hard to increase the sales at all with the Wii Shop channel in its current form.
Finding games you want needs to be more intuitive. Make it easier, faster to browse through games. Each game should have descriptions, images, gameplay videos, and a short demo if possible.
The Wii Shop channel as it is now is currently a pain to get into, it's slow (navigating), contains hardly any information for the games, and can be a pain in the ass to buy games with.







