I guess on a rez mid-battle, you would be able to pot quickly, but then it should be based around the rez. Otherwise, I don't see any downside to being able to pot anytime.
Dont know how long the timer actually is, but having a longer combat timer on combined pots would sound pretty reasonable to me: So you have to make a decision between single and combined pot. Guess having the combined pot timer only slightly longer is a good trade-off. So they are still stronger than single pots, but there is still a use for single pot for moments where you cant handle a long combat timer.
What's the point of having the delay after /release though?
Its not about delay from release its about delay from Combat. Im not sure how the coding works obv but prolly alot more of a hassel to do something like that then make it a blanket thing. And honestly you die and if you release within 10 sec press on healer cure run out get haster and ready to go you have like a 30 sec wait? just run and buff a bit down.