Leonard has already shown himself to be an elite defender, and he is a strong rebounder for his position and respectable scorer. This year he managed to increase his scoring, rebounding, assists and blocks and maintain his steals despite a slight decrease in minutes. He had a big series and earned the MVP award, an award that very few players have been able to attach their name to. Some of the best small forwards who ever played the game don't even have one: Pippen, Nique, Melo, Dr. J., Elgin Baylor, Chris Mullin.
This is a pretty rare feat. I think Leonard is great,and Pop seems to think he is the future of the franchise, but is he going to live up to this award? Will people in 15 years see this as a series that defined a future great, or will he become a guy like Cedric Maxwell who was good, but never an All-Star despite playing at a high level in an important series?