Hmm. I don't like it!
It made me decide to go find some cool shapes and see what happens to them.

The part of your mockup that I do like is outlined in GREEN (bottom-middle). It implies a sort of diagonal grid (lattice?) structure, but it also doesn't do it well enough for me to go crazy for it...

^^^ I wish
that structure could come out more clearly.
Anyway, I'm becoming a fan of the oblong shapes the current system generates (rather than detached with structural backbone?)! Those were basically all of the interesting shapes I screenshotted wildly while on a single run. Do you like them? s: Am I all alone in liking them? x3
EDIT :: The one in the top-left I screenshotted because it was awkward, but I think it looks more awkward post-mockup (outlined in red).
The shape in the top-right looks a little awkward too, and I mostly took a shot of it because of how many features it had.
Some of the more small and elegant shapes are my favourites (see: tall window in b. right, interrupted ring in b.left
(ruined, I think, in the red-outlined remockup), and the double-layered whatever-that-thing-is in mid-right).