I agree that that's a natural progression, but I want to finish the 47 version first. I haven't played the regular levels with music for a long time, so I'm enjoying this!
I've done Tricky now. Tricky 22 (already mentioned) is the only impossible one, and all 100%able levels remain 100%able (including Cascade). Points of interest:
* Tricky 1 and 4 have splat starts, both easily dealt with as you have plenty of skills. Taxing 7 is impossible (no floaters!). Tricky 1 has no repeat.
* The drop at the end of Tricky 7 can still be broken into just two survivable falls.
* On Tricky 8, the fall from the middle platform to the bottom-left corner is fatal. Easily dealt with, but there are so few levels where the solution is affected at all, I have to mention every little thing

* Tricky 12 needs four bridges before the initial drop is survivable, unless you create extra space by bashing into the wall. (Of course, since you have 50 floaters anyway....)
* I solved Tricky 13 in a completely different and ridiculously complicated way just for fun
