In my opinion Only Crates is very different from Intermediate, it has more to do with Team17 than intermediate, but is still different because it works with crate shower, which I loved about WWP, and Crespo used to play that game too.
So this is an Only Crates variation, maybe a variant, I didn't test it, but I know Only Crates and I think it was more cool than T17, due to the Crate Shower from WWP, that is different from the RubberWorm one. Although Only Crates is not very well balanced in my opinion, and way too random, somehow like Kaos is maybe.
That's why I like variations that cope with the original scheme issues. I have my own variation/variant of only crates that was my first ever scheme, called Moles n' Crates. I plan to recreate this scheme when Crate Shower become available in WA. I simply don't like playing only crates using RubberWorm crate shower, it is different and that annoys me. So I refuse to publish my first scheme using RW crate shower, because will not be the way I liked to play.