If you need a macro to not see the all the bars going on GDC (even if it's less than 2.5 secs), there is something to fix here. Once I activate PoM, Divine Heal or whatever the utility ability, I shouldn't see all my bars with a GDC-ish countdown ont them.
In your exemple, you cast Regen, but if I want Cure or Medica, it means I have to make a macro for that too?!?! With Presence of Mind I have to make 3-4 different macros just to be sure each spell can be cast without delay after PoM?!?! How does that even make any sense??
Like I said, I shouldn't have to make a single macro for something that isn't working properly.