Personally Rayman is Rayman to me
I mean yeah it makes more sense to have the creator behind it so we have a much higher chance of it being a higher quality game but Rayman 3 is a really good game too with how unique it is. The scoring is what makes the game fun to keep playing. Aside from that though I really love Rayman 2 and would play that over and over despite there being no replay ability apart from the game being a really fun one to play. Though I love all of them and even keep playing the UbiArt ones over and over too. I'd love another 3D game using the game engines and graphical power they have today but then I still wonder will it be the same? The reason I say that is because the game engines are extremely realistic nowadays but I always found the funky physics made the games more fun to play.
I really like the UbiArt games and the idea behind them (personally I prefer Origins both for the art style and the setting I guess) so I wouldn't say no to another one of those games though as I said it'd be nice to see what they could do with today's technology on 3D.
As long as it's Rayman, it's good in my opinion
