According to everything I've seen, he's actually 6'4 or 6'5 which could be an inflation, but in that case he's no shorter than Orton or Triple H.
I don't think his lisp is Kanyon bad, the Master Lock can be modified easily enough, maybe to a Camel Clutch Full Nelson or something. He was playing the dumb jock role perfectly before he left, just take away the body builder aspect. He and WWE would have to put work in, if they even decide he's worth keeping, but I'm just saying not to write him off.