The point of Jazz 2 wasn't the difficulty. Like you said, you can get through pretty easily without suffering a lot of damage. The point of these levels is discovering the secrets and finding the treasures. And the bosses can be pretty hard if you do them for the first time and you don't know what they're going to do.

Also some of the levels are pretty hard with regards to jumping, for example those metal crates which spaw those 1-tile platforms in the air, that can get pretty frustrating. This way of playing, is much, much better then the trial and error Jazz 1 had. In Jazz 1 you just kept dieing because you didn't know what was ahead.

As for 3D, in my opinion you can't say "Let's not make it 3D because we can't have a level editor". JCS is great, and has kept Jazz alive for years, but it should never be the main focus of the game. That's like saying "Well guys the game may be (-)(-)(-)(-) but at least there's a level editor so go nuts with it".

And besides, a level editor in 3D is perfectly possible. It's already easy to make levels in UT3 Editor, I learned it in a matter of hours. If they make an editor in which you can spawn premade 3D objects like the tilesets have, + if they add premade events to that, a 3D level editor can be perfectly possible, and it could be awesome.