It'll never happen. It's still a 1983 airplane with 1983 manufacturing techniques. No airline in 2015 would every buy a plane with so many rivets.
The UA pilot contract specifically says that anything larger than essentially 76 seats has to be flown by mainline.
Keep in mind that Allegiant is run by the guy whose relentless business practices led to a plane going into the Everglades on fire, so don't expect much.
This scenario would be all well and good as long as the Army never again has to provide CAS in an environment where it does not have complete control of the air.
Otherwise, it would be the...