Generally I really like the option of getting rid of drops.
If powers take the road of having enhanced versions, fuel could replenish at the end of the fight.
Don't know if Supernova should replenish fuel or only life, maybe the latter, and that should fix drops entirely, by making them not that relevant.
Other things, well, I really like the way the lore is going so, I'm patiently waiting to know more!