Emperoreddy
Show Me What You Got!
I haven't played it, but it looks like the kind of thing that's so hectic that Mario skill seems like it wouldn't even necessarily translate (because the challenge/fun of the game has never really been about how many enemies on screen-- unlike Tetris, which fits like a glove). Is that the case?
No it definitely challenges your Mario skills as the extra enemies can make the platforming way harder.
Challenges your memory of secrets too as the extra coins or knowing where a star is can be a life saver.
I don't totally get all the mechanics though. Especially level progression as you jump back and forth a lot and even the warp zones are random.
The fire flower is a must. You are in a bad spot without one