I totally got your point. Same thing with being a catcher in baseball, intellectually the hardest position in Baseball thats why so many go on to coach.

But let me ask you which 8th grader you would rather have a 5' 165lb kid with great understanding of playing O line (from his years in peewee and pop warner ball) or a 6' 215 lb farm kid who is an athlete but has never played O line in his life but wants to learn? Can ones skills off set the others physical advantage?