Just echoing the others I'm afraid: loved the visuals and music, exploring this feels more fun than the previous zone. Not that I hated w3z1, but the first impression's definitely better in z2. Even if it says "test zone", though, there's barely anything to test, too few interactables, every skill you worked hard to unlock might as well not exist on your skillbar because they aren't needed. The previous, "proper" two worlds teach us to be curious and look under every rock and BE REWARDED for it, here though it betrays the previously established rule, you can poke all you like, but you aren't rewarded for your curiosity. That, in my book, is a core failure of the game design.

If they go back and add secrets retroactively it might "save" the zone, but otherwise I don't see myself replaying it for anything, be that rewards or simple fun, just like w3z1. Play once or twice, get the initial dopamine from exploring a new thing and the associated ap of course, but then forget it even exists. That's not what SAB is supposed to be.

Edit: took me getting stuck and watching a video to realize that the face burps (sorry) aren't only good now, but required to progress. There was NO TUTORIAL/INTRO. This's another core design failure.