Gonna' go out on a limb while waiting to pirate it and say based on a gameplay vid. I saw, the game's not really that good. Aside from the production values, I'd argue it's rather dull than passably mid.
Outside of the finicky/floaty movement -- which everyone seems to love simply because it controls decently -- the levels are way too big and other than the ball form, I feel that amount of space really doesn't compliment the rest of spastic movement tech at all nor does the game benefit for having such wide open areas to begin with and even then, when it comes to the platforming challenges, they're very linear and mind-numbingly easy by comparison. The platforming hazards range from simple to being easily bypassed entirely, which makes me question why they even bothered adding them at all. There's also these long stretches of roads/tubes in each stage that separates parts of the level that I can only see as padding. I more or less felt the same playing Demon Tides' demo too a few months ago since, ironically enough, 4D's made by the same devs.