Lets say Stanton is good enough to QB from here on out. Does Armstrong convert to WR or RB or would you see him saying f it and transfer out.
I could see him in the running back mix. Trevone Boykin was bounced around between QB, WR and RB. He was raw and a gunslinger as a QB, but very athletic. He did whatever they asked him to do (TCU). New OC came in this past year with a new playbook and system, and he won the QB job over an Aggie transfer that backed up Manziel. Look how great that turned out. Coaching can make a difference if a player has the tools and applies what he learns. Boykin is really unbelievable and a totally team player. It's been great seeing him grow each year.
As for Armstrong, I really think it depends if the new staff can help him improve, and whether TA will embrace, learn and apply. The new staff knows QB's pretty well apparently, so it will come down to TA. If he can't, then he won't be starting.