Yeah a cooldown Gameplay Effect needs to be created for every ability so they can each have their unique cooldown, which kinda makes sense? I wouldn’t use the same Cooldown gameplay effect for 2 different abilities even if their cooldown time is set by ref by caller since they’ll indeed be using the same gameplay effect to know when they can be activated again.
Unless you mean having stacks of the same ability which I didn’t dwelved in as of now since I won’t be needing that personnally.