i played long time without exceptional shooter(my championship team have 1-2 pretty good shooters), but my team had good passing values and good shooting bigs(like playing with two PF). My Motion offense is quite effective with that.
My rival has three good-exceptional shooters, one Defensive Center(ID, Reb and i believe some SB but no IS), and passing on the positions 1 and 3. I manage to steal him somehow the homecourt, but he plays an pretty succesful RnG.