Interesting concept. I might suggest taking the Special World submap and put Funky as a red dot, and put Abusive at the end of the split path from Funky.
I'm not going to because it looks weird to me, having a path go off the special world is just weird to me
I have an idea. Maybe, you would start the level with all of the Special levels completed (but you can't go back to the other ones), and it starts with a pipe with the goal right there. Once it's done, the usual star to teleport you to a submap appears. Take the star, and you go to your submap leading up to the level: Abusive. Somewhat like up a hill.
Well, the first room has some moderate use of pit, so points there. My favorite glitches are block duplication, and springboard-Yoshi-jumps. I've seen that in Item Abuse, I think. Yoshi stuffs himself with the springboard and he and Mario go almost immediately upwards. It would amp up the difficulty if you were to implement (the 2nd glitch I said) that into your hack.
If that wall on the right about 2/3 to the right had a Muncher on top of it and was somehow placed so that you had to wall-jump up it and then off of it and then to the second shell, I'd say so. I wouldn't worry about specific, imprecisely defined categories.
Yeah, I wouldn't really call that pit. Both shelljumps are fairly simple to pull off, and there's no frame-perfect glitches being required. Professional frame-by-frame time wizard. YouTube - Twitter - SMW Glitch List - SMW Randomizer