In my experience, it seems like dual-threat QBs are generally better runners than passers. Just look at Frazier, Crouch, TMagic or Armstrong. With the exception of TMagic, none of those guys threw a poor looking ball -- they just ran it a lot better. Or in the case of Tommie, we ran an offense largely built on pitches and reads, opposed to drop-back pocket passing, so TFraz never needed to really stand back and chuck it like John Elway.
Anyway, my point is this: since a lot of dual threat guys are run-first, I think the natural inclination for a coach is to try and develop their passing mechanics in Year 2. Work on the lesser part of their game. And that makes sense, but I feel like sometimes you see a regression with dual threat QBs in Year 2 because they're trying to really be an Elway and not be dependent on their legs. It's like when Rocky had to learn to fight right-handed.
So you overcompensate on the passing game, and by default, remove the running threat out of the toolbox. You're left with a kinda-decent passer that's easy to rattle and pick off.
Here's hoping Frost will just let Adrian run wild this year.