You need shooters to surround a superstar like Jimmer. The great thing about Jimmer's last year is that the other players were good enough so that when teams doubled or tripled Jimmer then BYU could make them pay. Your other players need to be shooters at BYU because chances are we are only going to get one or MAYBE two super players in a 4-year cycle. To help that player the most you need to surround him with shooters so that he isn't the only offensive weapon.
PLUS:
Brining in shooters just perpetuates our exciting brand of basketball. Get us on a hot night and we can run with anyone.