Gun modding Update

I am applying new updates to the gun skills and I am about to release an update on the Disruptor. I added Cooldown on it for balancing reasons and so somewhat simulate auto reload. but I want to hear you guy's opinions about it. Also, should it consume Stamina, Ki, both or any? What do you people prefer?

Pure Cooldown would emulate a third system of management, making the gun totally independent of your character. But wouldn't you just let keep shooting nonstop.

Stamina cost makes you have to manage how you use your stamina well to use Evasives and teleports.

And Ki cost would just it make it works like any normal skill.