Had an idea for perhaps dealing with the issue of cleric pets.
The way they are supposed to function is that they attack the mob the cleric targets until that mob dies.
Currently Cleric pets function like an enchanter pet in that they attack only when the Cleric receives damage.
Since the code doesn't exist to facilitate the very unique way cleric pets act, a good idea would be to use the code from either swarm pets or proc pets to provide an appropriate spell.
I would recommend between 30 seconds and 1 minute before gating.