You're right, he has been playing insanely well lately, and has done so for the vast majority of 13 seasons. He's probably one of the five top players ever, has been having another outstanding year, has been in the last five finals with two different teams (hardly a coincidence) and is possibly headed to a sixth straight with a team that showed, as it did again last night, that it has a tough time winning without him.
To me, he's a joy to watch, a great team player and makes players around him better. So he's not perfect, he sometimes does things like what the OP jumped on to start to this thread, but to focus on that incident and other "shenanigans" that often are ultra-magnified by social media, I feel, is misguided. He's a great life story whose greatness as an artist on the court is taken for granted.
As for strong leadership, there's only one Riley and LBJ's not going to San Antonio. I truly think time will prove Ty Lue is the right person for the job and has LeBron and other players' respect and can be tough cop when needed with LeBron. He was after LeBron was joking around with his buddy DWade at halftime of the Cavs game in Miami recently, had a sitdown, told LBJ it was a bad look, Lue says LeBron understood and agreed.
http://www.gq.com/story/lebron-james-is-underrated-and-overlooked