I've been playing dauntless a fair bit recently and the way their axe charge mechanic works there could be used in melee 3.0 concerning charge attacks using up the combo counter.
How does it work in Dauntless?
In dauntless, charged strikes with your axe builds a special attack meter. Once full, you can expend the meter to unleash a highly damaging strike and gain a damage buff. You can stack this buff up to 3 times by filling up the meter and unleashing the charge attack. Howe