Well, I've played a bit of it. Game seems decent enough, though the difficulty level is somewhat schizophrenic, with the tutorial being harder than the first couple of levels. The techniques themselves seem like weird choices too, since most of the advanced stuff (duck climbing on nets, ducking through ledges via one block gaps and even carrying items on said nets) doesn't seem to get used until a few worlds in. Would have been better if the game just taught you these things when they were actually required rather than shoehorning them in level 1.
The level with control reversing water was a pain too, because jumping out changes the controls in mid air. It would have been better there to... maybe add some control reversing air above the control reversing water so people weren't so confused.
Bosses were lacklustre (though the final boss will seemingly be really good), but that's just part of the VIP 1 era charm. That said, the game itself plays out more like VIP 2 or 3 at the moment, with a weird level of chocolate content not at all like the (very minimal) stuff in the first game.
The overworld and music is nice too, no complaints there.
But it's an interesting game regardless.