Yeah he's a really good player, but there is always room to be even better. Consider that Hansbrough was at ~25 points per 40 his first two years and then ~27 his last two. Armando could add another couple buckets per game; his two-point shooting has also fallen off almost 100 points from his sophomore year. You mentioned that he has no shot outside of 3-4 feet, that's a pretty big deal.What was there to improve on though? There wasn't really anything that could be improved on in those numbers because of his skill set. He was basically at his ceiling as a junior. About the only thing you could say he could have gotten better at would be to develop a 15 footer, but even then he's just not an NBA type of player. Happens all the time for big men in college.
He could also try to slim down more to add additional defense to his game. He's never been a great rim protector, and his block numbers have gotten worse.
Finally, he's not a good passer, and that's an especially critical skill for a big man who gets doubled as much as he does.
I think there's plenty to improve upon, even at the college level.
How many minutes you played doesn't really impact rate (per 40) stats. Also, if anything his supporting cast has improved from his sophomore year. He had to play with the (pretty bad) freshman versions of Love/Davis and a pretty limited four in Brooks. We in desperation had Walton playing that year for some offense. Bacot's junior year was far better with Manek and improved guards, and even this year was better.Good example of why I don't trust stats as much as many do, the numbers can be skewed in any direction you want. How many minutes you played and who you had giving you help on the court has changed since Bacot's soph season. That soph season Bacot had Brooks, Sharpe, and Kessler with him, he has not had that other than that soph season. Literally the kid has been on his own in the deep in the paint physical battles, he needs some physical help, he needs another battler in the paint, bacot needs a battle buddy!
Bacot's a great player, but I really don't get the sentiment he has no flaws. He's not won NPOY or been on any draft boards, so clearly there are ways he can (at least theoretically) improve. He's never going to be an amazing NBA athlete, but the skill areas (shooting, passing, defense) still leave room for growth.