We'll definitely have to test it out more. I like Mac keeping KO punch till use, I just think it should be blockable and only kill around 30-50% depending on character weight.
As for his recovery, I definitely agree its just mediocre. As you referenced, its one of the easiest to intercept due to its linear nature. However, its still respectable and has a lot of mix up potential since he can jump out of the side b.
I just hope we get "Zeus Ex 2.0' with a more polished Mac, a finished Isaac, and balancing.
Speaking of ridiculous recoveries... Link would potentially have the best recovery in the game if he could do the Melee bomb jump [throw bomb up and up+B into it].
For some reason, the devs decided it was a good idea to let Link zair out of up+B, and if the zair hits a wall, he can do the reel-in [just a walljump really] and up+B again.
Just his normal movement [fulljump, double jump, up+B] lets him go from the left part of the underside of Temple to the leftmost edge, but the new recovery lets Link go underneath the large lower platform [both directions] and complete the so-called "Reverse Hyrule Jump" at zero percent. To do that, Link pulls a bomb, waits about 3 seconds, then does running full jump, double jump, up+B, bomb explodes, he can up+B again, but face it left so you are high enough to zair the wall on the right edge of Temple, which you can then reel in and do up+B again.
My *only* real complaint with this Link is that his uair is really laggy and his fair is pretty laggy. I think L-cancelling isn't necessarily great game design, but if Link could L-cancel, I would absolutely play him a ton - his dthrow is way less useful than other games, but he can do uthrow utilt, and if he could start the uair juggles I enjoy so much in PM and Melee, and he would be so awesome to play if he could get that not-that-laggy uair and low-landing lag fair. As it is, he feels okayish when I spam nair/bair and land the dairs as needed, but his onstage uair and fair feel oh-so-lackluster.
Link flashes almost every time he lands and seems to have next to no landing lag. Ellipsis used to be on the boards but IDK if he's still around or how to tag him.
EDIT: Also Falcon has no ultimate but he does have supertaunt [like Link's] - it changes his usmash, gives him fast falcon punch, and I think changes the angle on his uair. If Cloud does utaunt [the limit animation], the sparkles indicate his down+B now meteor smashes [or spikes???] and his aerial down+B does omnislash v5 [or something like it] if you hit with the dive.