I was thinking, Nintendo has said they will be open to the ftp market for Wii-U's eshop. You know what they really need? They need their own version of a TF2 game. Something like a Mario paintball game. Or like Smash Bros does, and have more characters than just Mario and his friends. Or maybe even a Mii paintball game or a combination of all.
You know, something free, something every Wii-U owner can download, and something that is actually good. Use the TF2 formula or just keep everything free. But there could be different pickup's like new weapon types, different stats, different outfits, different game modes, etc.
There could be different classes similar to TF2. I mean they could copy and improve on so much from TF2 using their own Nintendo characters. Keep it family friendly by making it paintball. But still a solid shooter with some depth. Classes, upgrades, stats, maps, rare loot finds like outfits and special guns, multiple game modes, etc.
Link it in directly with Mii-verse and you could start the match right from there by shooting people in third person or top down view or whatever view point you call what Mii-verse is, lol.