If he had been properly booked and pushed, what do you think was the ceiling on Chris Kanyon? To me, this guy had the size, look, wrestling ability, creative moveset, personality, mic skills, and charisma of someone who could've been deserving of a run as a WCW or WWE heavyweight champion. 
Really?  God bless Kanyon but to me he was always the epitome of the spot guy who would do stuff because he COULD and not because it made sense for the match.  His run as fake US champion during the Invasion and DDP's backup was about as high as he was gonna go by that point in his career.