In the minority with this one,

has a great idea for a design and it pushes the limits of what a Smash character can do at any level.
Execution wise, yeah they screw the pooch on this one. It's clear they weren't keen on making the character fly after all the nerfs, no matter what he got in return. Quick normal's, armored smash attacks and K.O Punch clearly weren't enough to make up for pitiful aerials, a bottom 5 recovery and the worst grab game in Ultimate. (I guess they forgot that decent grabs and throws are required for good ground coverage)
Not even
Dash Canceled Grounded Attacks could save him.
B = buff
N = nerf
Here's my idea of a Mac redesign and bringing him back up:
B = All nerfs from Sm4sh and 4.0.0 were reverted (Jab combo, Up-Tilt, D-Tilt, both ver's of Side-B, etc...) while keeping all their buffs.
B = Air Dodge goes the same distance as everyone else's.
B = Full Hop and Double Jump go a tad higher.
N = All Smash Attacks now have percent armor (Up to 13%), but have more active frames.
B = All throws and pummel do more damage.
B = B-Throw has more KGB, now killing around the same time as Mario's B-Throw.
B = Neutral-B percent armor now takes up to 13% from 6%.
N = Grounded K.O Punch is no longer unblock-able and has less KGB, killing about 20% later.
B = Both ver's of K.O Punch have much less end-lag, deal a ton of Shield Damage and Aerial ver has more KGB giving it some decent kill power.
B = K.O Meter now slowly builds up over time like WAFT & Arsene. (Rate: 1 Minute and 30 seconds = Full Charge), in exchange for getting less of it when doing and taking damage. This is my attempt to try and deal with platform camping.
B = All Aerials are Short-Hop Auto-Cancel-able and have no more then 10 frames of landing lag.