Huh, an open world game, eh? What I've been wanting to see out of the Rayman series for eons (well, that and Metroidvania, one of the two will do me fine). Pity it didn't come to be, but at least the concept was realised in BG&E.- After Rayman 2 and before Rayman 3 there was a prototype that got developed and it would have been the real sequel to R2 and it was called Rayman 2000. It would consist in an opened world with houses, cities and roads built in trees, like some known R3 artwork shows to us. Although the project was dropped, it was not fully lost because these elements were used for the Animated Series. It explains why Razoff ressembles those Aeropolis inhabitants.
Hmm, Wikipedia has an article on that engine: http://en.wikipedia.org/wiki/Jade_(game_engine)- The name of R3 and Beyond Good and Evil's engine is called Jade Engine
Don't know what this means though, in terms of the R3 Engine supposedly being an improved R2 engine, though it'd be astounding if it were the case, given the lifespan it's had, all those games being rooted with Rayman 2.
