I'd still like to see MK get some more nerfs but it's not a high priority. He still has that stigma from vBrawl so not many people are willing to play him.
Until I see a top level MK player actually pick him up in B+ and prove me wrong, I'm still under the opinion that he is fine as it is. I'm no pro MK player obviously so I can only go off of what I see when I play him (which is fairly often, because I love the character)
Yeah, he combos so naturally and damage builds up so quickly for him, but he just can't kill like he could in vBrawl. The only way MK is going to kill early anymore is out of gimps and there are some characters he just can't gimp. I wasn't killing my friend's Jiggly until like 120%, and I'm sure there are people who are just going to say "lulls you are playing MK wrong then" but that's why I want to be proven wrong first. Going up against my friend's Falcon was almost as ridiculous as going at him with my Wario just because he is so easy to combo and gimp, but then on the opposite spectrum there are characters that are hard to combo and gimp even for MK; unless I was at the edge of the stage I wouldn't be killing with Up B, Glair, Nair or Dsmash until over well over 100%. Fsmash is a much better kill move but has too much start up lag to be any use outside of a dumb mistake.
I also don't see how you can really tweak him without hurting his overall combo game, and no matter what you do he will always gimp as well as he does, I would hate to see him loose more. There is also the chance that matchups will grow to see characters countering MK, especially as the rest of the cast is tweaked further; if that happens then there would have been no reason for more nerfs and most likely people wouldn't be willing to change them back.
If people really do want more nerfs, I'm not going to shout and raise a ruckus about it because he isn't my main, but I don't want to see nerfs happen to any character not just MK. But I will agree that any potential issue with him should wait because other things are more important.