Allow me to propose an alternative to A-Train (because I don't think your wrong).
This offense can improve by mixing in some more Gulley and keeping Ant on the field split out wide or in the slot. Allow Ant to be the two-way threat he is, and trust Gulley to get you some yards on the ground. I would much rather trust Gulley, who has shown some spark and has actually done some good things when he has seen the ball, than an incoming freshman that has struggled with his weight.
"But, but... OttoinGrotto!" anonymous poster exclaims. "We must have a big back to move the ball, and right now we only have a small back, and the other guy is a small back, so we must have a big back... because we
must!" To which OttoinGrotto replies
Look, we're way overstating the need for a big, lumberjack running back, and I'm pretty sure that has a TON to do with the fact that Carter was like the quintessential big bodied running back that could really only do big bodied running back things. Now, he did those things very well, but Carter was not going to catch a pass, he wasn't going to run away from a defense, and he wasn't going to be a threat unless he lined up directly behind Nassib. And that's all fine and it worked (somewhat) for us last season, but guys like that are only ONE way to move the ball on the ground.
Put me firmly in the camp that believes that we don't need two radically diverse types of backs in order to move the ball on the ground, we just need two guys that can move the ball effectively, and we have a much better shot at getting that if we 1) improve the blocking and 2) give the ball to the guys that have proven something at this level than if we hand the rock to a true freshman that more than likely just isn't ready.