I remember when Brock Lesnar was fucking with Frank Mir's brain after getting manhandled at UFC 100... Frank started to gain more muscle and weight, because he thought that this was the key to beat Brock.
The one thing that Deontay doesn't lack is his size though. His height combined with his lean frame is unique, and probably gives him this snap in his punches. It's the sweet science... Applying the Jarrell Miller type of McDonalds routine could take away his power and then he has nothing...
He's simply not good enough as a boxer... Doesn't set traps, shows no signs of ring IQ, fight IQ or tactical IQ... He said himself that those things dont exist, because he doesn't grasp it. He said he would knock out Joe Louis and Mike Tyson, because he thinks his size alone does the trick.
For him its just go out and throw punches... Which works fine until you're in there with someone savvy.
Very mediocre boxer and he's not going to improve drastically at this point in his career. Tyson's Fury too far away to catch up to, he will never beat him.