Wii re-release
Just read that Nintendo are planning to re-release this for Wii, the implication at present being that Corruption's control scheme will be available as an option. I really hope this is true - Prime 1 is the best of the trilogy IMHO but the joypad controls make it seem a bit clunky after playing Corruption. With Wii controls Prime 1 would be great.
The only stumbling block would be how to implement weapon select as well as visor select - I read that Retro went with a stackable beam system for Corruption because the Wii controller doesn't have enough buttons to implement an interchangeable one.