Like I said in another thread, you are who you can guard and Jimmer can't guard anyone. What's the point of having him on the court to hit 40 ft jumpshots when he gives up just as many if not more points on defense (can you imagine how Parker, Westbrook, Terry, Lawson, Paul, Felton, Curry, and Williams would destroy him? Especially with our interior defense? And that is just pg's in the West.)? I know, I know, BYU doesn't want Jimmer tired on the offensive end so they tell him to take it easy. Just like his high school coaches did. Just like his junior high school coaches did. Just like his brother told him growing up. What you are saying is you are going to take a kid who completely dominates the ball on offense, and had NEVER played on play on defense, and you are going to ask him to give the ball up, and play defense and you think he will do that overnight? Not likely. So, as far as Jimmer goes, he is an amazing college player. Probably one of the best ever. But the days of him taking 20 shots a night are over.
Forgetting about his lack of athleticism, defensive knowledge, height (his future is as a sg and 6'2" sg's don't excell in the NBA), lateral quickness, knowledge of running an offense in an actual system, just the fact that you are asking him to relearn the game of basketball doesn't bode well for him. He may overcome all those odds, but I wouldn't risk it. Not with Nolan Smith sitting there (ironically enough, a pg that got more assists, less turnovers, acutally ran an offense, plays defense, averaged the same amount of points per shot - 1.4, etc).