Honestly, I'd rather have a straight Melee HD via VC or a remake that makes Wavedashing balanced around the characters. The other obvious glitches(like Mewtwo's major ones) can be cut out. L-Cancelling can stay since it was designed with the game in mind and works fine. However, Wavedashing is quite hard on the hands, which is why it being gone is not a bad thing. Overuse of input commands is bad for you hands and all. Note that L-Cancelling does not count as an input command since it's literally needs as much of a press as A or B. It's bad balance-wise, but does not matter for your hands.
At this point, since Wavedashing is the biggest thing about Melee, and clearly is bad for your hands, remaking the game is not a terribly good idea. It would definitely sell at this point, sure, especially with more balance done, but the possibly of issues coming with the input commands makes it not entirely worth it.
And yes, I'd prefer all glitches gone(Wavedashing isn't a glitch, to note) too, but that's also a major reason why it's popular. Besides obviously being fast and fairly balanced when it came to game mechanics overall. Not too offensive or too defensive. Obviously the characters are not that balanced(nowhere near bad as Brawl or Smash 64...), but it's not severely bad. Smash 4 has the best balance so far, mind you.
To say the least, I'd also like them to give a bit more than the base roster. Make some of the NPC's playable. While the Hands don't work well due to their game mechanics, there's nothing wrong with Giga Bowser, Male Wireframe, and Female Wireframe.