I really think they should either make a port of the original two games for the xbox or make a new game that still has abe with the same side scrolling fun, I liked OSW but it was way too different it was closer to a FPS, I miss the old games.
The idea of the Oddworld series is to explore all the depths of Oddworld. If that means FPS, then so be it. Besides, variety is good. 5 games of platform would get annoying.