I think it’s an interesting idea, and the presentation is very nice (if anything, some particles could perhaps add a bit of juice).
However, I think it needs more constraints. For example, I didn’t use any blocks besides 1x1 and didn’t even have to use the web for movement - jumping is just enough to complete the level when you place the blocks strategically (and by that I mean 2 up, 1 or 2 to the side in a staircase pattern). Perhaps having some blocks that can’t be walked on but can be attached to using the web could help with that, as well as some permanent walls or classic spikes.
There were some, uh, bugs when you place two blocks close to each other (I was attaching to the wrong block), but overall I think the character controller is quite nice and fluid.
I liked the idea of having multiple build zones so that you can’t simply disassemble the level behind you.
Overall, I see that it was quite a lot of work to implement everything, so great job!