It's not that a mobile QB would "solve" Oline issues, it's that it would almost certainly help AND without question gives a any offense an added threat in general. That extra dimension stresses defenses and wins games every single week in cfb. The easiest example is when it's 3rd and long, everyone is covered, yet the QB breaks free for a first down run. Rips the heart out of a defense. Which says nothing about designed runs with an extra blocker, etc.
And by the way, while UH had 11 sacks last night, it would've been even worse with a statue back there. I mean, Kaaya might have been sacked 20+ times if you swapped him in, no exaggeration.
Jackson - 3 fumbles, 3rd down efficiency 8-21, 4th down efficiency 2-4. So that extra dimension means nothing if the OL can't block the DL.