I regret making this post
By Wii I assume you mean Wii U, as pretty much half the planet owns a Wii (and a good quarter of them have probably sold it).
I guess a Colosseum remake would be pretty neat, although I think that XD is more worthy for a remake imo. (Although I haven't played either games, I think XD is superior while looking at some footage of the game.)
But, you know what I would like even more than a remake? A Prequel to Colosseum.