When you’re already a proven NBA superstar, improvement usually comes in subtle ways. For Houston Rockets star James Harden, his ascent into the MVP conversation (it’s essentially a two-man race at this point between he and Stephen Curry, unless Anthony Davis’ New Orleans Pelicans make the playoffs) has come from a slight improvement across and board and an understanding that league MVPs are, and always will be, two-way players. The Rockets have had to rely on Harden this year more than