I don't see a reason we need a "way to keep stacks" or "Getting them back" - Multiplicative scaling is Monks' name of the game, and come HW, with GL4 we get

+36% Damage
+20% attackspeed
Those alone combined are 63.2% bonus damage.. and it only gets better when you use cooldowns; Internal Release goes from being a 15% (30% crit / 50% extra damage 30% of the time) average increase to a 24.48% increase, assuming no changes are made. Blood For Blood becomes 16.32% increased damage.

Even if we don't get more damage cooldowns we get 63.2% damage constantly from greased, +5% on fists of fire, and + 10% from Twin Snakes, + 10% from Dragon kick... We don't need anything, maybe a way to consume stacks and do liek a 4-500 potency attack?