In my opinion the warrant officer corp would be a lot stronger if we didn't have to depend upon promotions to stay in service. Unfortunately that's not the case so you have a lot of focus on college education and OERs and not much on your performance as an aviator. I don't really understand the move up or get out thing. If a guy is happy making W2 pay and kicking ass at his job why get rid of him because he didn't get a degree? That's for another thread though...
As for the Army taking the A-10 there's no way. We are brought up as rotary wing pilots and the institutional knowledge just isn't there to incorporate a tactical jet into the mix. We could be trained to fly it but on the battle field we would perform like ate up dog shit. It would be a rough transition for sure. Then you have the budget, maintenance, facilities, etc. It's just not realistic at all.