Can LeBron get any better? 30% of people say no
I'm on the record saying that I don't like LeBron, and I've always been critical of him on an all-time-great scale. Since his dominant Game 6 performance in Boston facing elimination and his MVP performance in the NBA FInals, I have no criticism of him at all - a lack of performances like those is why I had issues with him in the past. I now reluctantly say that LeBron is a hair ahead of Kevin Durant as the NBA's best player (due to the result of the Finals), and I haven't been shy about saying that LeBron is possibly the most talented player ever. However, this in no way means that he doesn't have any room to improve.
First of all, LeBron didn't even match his career bests in points, assists, steals, blocks, free throw percentage, or turnovers. How could he not get any better if he isn't even as good (at certain things) as he once was? Also, his free throw percentage last season was 77.1%, less than 2% above the league average of 75.2%. Free throws are, in most cases, simply a matter of practice. The more you take, the more you'll make. To say that someone who is average from the free throw line is as good as can be is ridiculous.
In addition, no one in the history of the NBA was so good to the point where he couldn't possibly improve. There has never been a person who hit every shot, made every pass, played perfect defense on every play, got every rebound in his area, never turned the ball over, etc. Every player, no matter how great his season was, could have done a little more. No player has ever gone through a mistake free season. Tyson Chandler, who lead the NBA in field goal percentage last year with an astounding 67.9% even could have done better. I watched almost every Knicks game last year, and there were way more than a handful of times when Chandler was under the basket and couldn't get the ball in the hoop - at least on his first try.
Finally, there's the aspect of consistency. Even if a player finishes the season with MVP numbers, there is no one (maybe besides Wilt Chamberlain in his 50 point per game season or someone else before my time) who put together those MVP numbers every single night. LeBron rarely put together a bad line, but it did happen. He shot 4-14, 5-15, 7-19, 8-21, to name a few bad shooting nights. He had an 8 turnover game, a 7 turnover game, and a bunch of games with 6 turnovers. I'm not saying it's reasonable to expect LeBron to put together an MVP stat line in every single game of the season, but until he does, he has room to improve.
Don't think I'm just saying this because I'm just some kind of irrational LeBron hater. It's not just LeBron, it's everyone. No player is perfect, so every player has room to improve. Michael Jordan averaged 37.1 points per game one season, but shooting 49.7% from the field, were there some shots he should have made, but didn't? Absolutely. LeBron has plenty of room to improve, particularly as a free throw shooter and late-game closer, and if he does significantly improve in those areas, you can pencil the Heat in for the next 400 NBA titles.