For me, it's this inconsistency between playing down low (since we disagree on definitions, I'm going to say "10 feet and in") and pretending he's an elite shooter, especially "on the block"...
Sure, chant M-V-P and make him feel comfortable in Portland. If it helps him sign a max extension here, great. I like having him on the team, and the potential of LaMonster bubbling below the surface. I (and everyone else should) recognize that when he's playing like LaMonster he's the best all-around big (not named LeBron) in the NBA. But recognize as well that his uptick in scoring isn't b/c he's playing more like LaMonster, it's because he's playing more like a mix of K*be's chucker-ness and Andrea Bargnani's efficiency (no, really, look it up). His rise in rebounding isn't from crashing the offensive boards (lowest total AND ORB% of his career), it's from sticking himself in position on D to get them. It's not LMA that's increasing the team's offensive efficiency to 1st in the league, since he's actually less efficient than he was last year--just taking more shots.