...So, has nobody here actually played the game?
I must admit, I'm enjoying it. The traditional platforming is pretty much nonexistent at this point except for some exploring in the hub area, but I'm getting into the whole vehicle thing well enough.
The levels themselves are a fairly strange state, as getting Jiggies/Jinjos is entirely challenge-based. This means that, while the levels are quite large and intricate, you can see exactly where you need to go on the map (and, quite early in the game, can simply fly straight to the point), and that the game enters a self-contained challenge in order to get your prize. I'm not really sure how I feel about what's become of exploring in levels (you'll still need to explore anyway to find notes, but otherwise it's mainly for fun), but creating/tweaking tailor-made vehicles for a particularly tough challenge is proving pretty fun. And, naturally, with the amount of freedom allowed in vehicle creation, there's quite the range of interesting solutions to any one problem.
I'm not really sure if I have an opinion on the art style; it's appropriate to the game, and I don't really object... And I'm glad to see that the humor is more or less intact.
Anyway, it's quite fun, but I'll reserve judgment until later.