The only thing I could see work is if you could buy a short term HP boost with your AA's. 1 hour, every AA spent boosts your hps with 10. (that means all those guys with 10000 AA could have 100k more hps for an hour, before they could go out and farm 10k AA's again).
Not OP, interesting use for short term gain, and gets rid of all the UNUSED AA QQ.
This would hugely increase training. And I know, we have zones and instances we can train in, but it is very obvious people don't use them for that when they should. From what I have seen of Hunter and Basher, this will never happen.