For those of you who didn't watch the videos that warionumbah posted, here's important info:
Leo got the ladder AND killed with it once in each set, against Boswer, a heavy floaty, Rosa, a light floaty, and Mac, a light fast faller. I might be a little too optimistic (as if that's a bad thing), but MK so far is looking strong and crisp.
To you MK mains who are still unsure about the current state of our meta: remember the dark days before Leo, when Tyrant and Ito and the lot were getting work done, but everyone just thought they were really good? Those were the days when even ZeRo considered MK a mid-tier. "But MK got buffed." Yes, that is true, but the buffs he got were mostly to niche moves (f tilt and jab). His core gamplay--his punishes and combos--were always there ever since release. Finally, we were fortunate to have Leo rise up and make the character fully relevant again.
So even after the nerf, ask yourselves: why not just do it again? If we proved our character was great once, I'm fully positive we can do it a second time. Tyrant said: "MK ain't dying on my watch."
And Tyrant linked this in a tweet:
https://www.youtube.com/watch?v=AEPM1lIkq-4&feature=youtu.be
TL;DR Leo, Ito, and Jband are already getting work done with the new MK, and they're making him look just as potent as he was.