re: Where is the relative weakness on this LSU offense?

Based on last year's performance, I would say the relative weakness on offense is the interior of the OL. The guards were particularly susceptible to crossing stunts. For example: Dellinger and X. Hill looked particularly bad in picking up stunts in the Tennessee game (although Hill did react correctly once and picked up the stunt, but missed others; while Dellinger whiffed badly and those whiffs resulted in sacks). Frazier and Turner also had issues throughout last season, Frazier with getting beat by moves to his inside and Turner with recognition and reaction to where his responsibilities lay once the play action started when he was not manned up on a play.

Get these issues shored up and this could be a very good OL.