We SUMMONED him! =O
This might not be the exactly right place to talk about this, but I stopped checking the original thread about Jazz3D when the demos were released, which I couldn't even play... but then again.. I think I CAN actually play them now... ooo.
But anyway, good ol' Baggers will read this anyway.

So, to get to the point, I've played Rayman 2, and I think it's a pretty bad conversion of the original 2D game to 3D.
The original idea of having Rayman's fist fly was taken out and replaced by.. oh noes, shooting!
There were very few different enemies. They were all just robot pirates, and not quite many of them. Most of the skills you need to play the game had to be used in racing parcours and the like.
Which leads me to Ninja Dodo's suggestion of not only making the original JJ2 three-dimensional, but to enhance its classic character.
Despite being 3D, it should allow for really cool jumps, like jumps in the air, jumps beginning in one direction and shifting into another, walljumps, really high jumps that make the camera shift to bird view at the top of the jump so you can aim where you're falling, etc, and the number of enemies shouldn't decrease greatly. In most 3D games, like Spyro 2, you have a 3D route and every once in a while, you encounter an enemy, pretty much like a duel. There are only few places where you have to react quickly and decide which enemy to attack first, to where to dodge, etc.
See what I mean?