And yes I may just leave this level as it it, focus on the new one.

I am currenty working on another, is better in design and bigger.

"Will take down"

I hope not, finding shortcuts is very fun!

Will take down and repair these things.

Cool level, I liked it!
But it is very possible to skip big parts of it by climbing on top and getting back in through the stripey ceiling.
And a checkpoint at the end of the left corridor would be nice. And you should maybe add a one cube door to the right passage to prevent people from going there when they don't have any blue cubes, which I imagine could be frustrating.

Thanks for that, I will try to proof this.

Nice architecture - but it is possible to go across the roof with just the purple cube and both blue cubes and skip the rest of the level. Nice architecture, interesting jumps - keep building!