I think this is too cheap at 1 Hero point:
Power Surge: The creature can instantly recharge any encounter power (or any power that has a recharge rate).
For comparison: there is a Warlord level 9 Daily Attack power that lets one ally recharge and use and encounter power and you regain an encounter power if you have none.
It seems that this variant really helps the players more than the monsters. It's nearly doubling the amount of action points the players get. You aren't giving the elite anything extra, and the solo only 1 extra. I would give the Elite 2 villain points and the Solo 4 villain points. I would even consider giving the regular mobs a villain point.
Getting more hero points also makes the human Action Surge power about twice as powerful (and every human already had the feat), and it makes the Warlord more powerful compared to the other classes.
Btw, the system is simple enough to be useful, I just don't like the balance of it.
Regarding balance, the problem is maybe giving nearly double the amount of action points? I like the thought of more options.