With the Xbox 360 Live Arcade game covers in mind, a cover for multiple games would be a nice idea for the Wii's Virtual Console games.
Making a cover for every game would be a pain in the ass and I guess during the Wii's lifespan there will be more games for the Virtual Console than actual Wii games. But one cover for multiple games of a series as SMMM suggested would be a killer. Like having one cover for Castlevania 1-3 (NES), Super Castlevania IV and Castlevania Vampire's Kiss (SNES) along with Castlevania 64 and Castlevania Legacy Of Darkness (N64) with a nifty name like Castlevania Anthology or something along those lines. Same for the Mario Series, Probotector, Zelda, Final Fight or whatever they plan to release.
Maybe using a Wii game cover template and modify the spine so that it reads Wii Virtual Console or something like that. I don't know, it's just ideas floating in my mind since they just named a handfull of games to be released via the Virtual Console and nobody really knows what games will be released in the first place. So this is just a (pretty) early thought
