not enough uses for endurance charges

hello,

i'm using a mercenary character and i often use "armour piercing rounds", which break enemy armour. i wanted to use the "break endurance" support gem, so i can gain endurance charges when i break an enemy's armour, but it seems endurance charges are only useful for warcries (which my mercenary character doesn't use).

i suggest you add something to the mercenary character that consumes endurance charges, so the "break endurance" support gem can be used by more than just the warrior class.

thanks.
-az