Ok, this is my list of bugs which have to be fixed for MP pets:
1. Healer does not always heal when told to.
2. Healer sometimes seems to wait until Hp is too low before healing, even if it's already been healing before the MP has taken the first hit.
3. If healer is healing someone, it will continue to heal until that someone is completely "Healthy", all HP restored, even if it is dirrected to stop and heal someone else.
4. Pet navigation is not much better. Have to constantly stop and look around for them, yelling Follow Follow! or Heal Heal or Guard guard.
5. Healer has difficulty healing near water in missions.
6. Pets do not always zone with their master, even when they are guarding or healing or following.
7. Pets move very slow around water!
8. Combat pet will sometimes agree to attack a target but then float motionlessly as the MP is slaughtered.
9. Check the damage outputs of combat pets, seems that the inferior wrath incarnation does more damage than the superior?
10. If a combat pet has been told to fight, and then told to follow it moves very slowly toward it's master, instead of speeding over!
11. Pet nanos rarely show up in missions as rewards or items in chests. Anima nanos are perversely rare. In fact most MP nanos are scarse.
12. Last but not least, If the person or thing that the healer pet was healing dies, it freezes up, and will do nothing, unless you zone out or log off and back on, and even this sometimes doesn't work. You have to wait until the thing times out and deactivates itself to make another one in the same zone!
Please put these fixes into a patch soon!
EDIT!***
After reading Amoxle's Post I have added two more Pet issues to the list:
13. Sometimes, when healer is healing a person, and that person dies, it is sent to reclaim along with the person that has died.
14. The pet navigation over water is horrible, the pet's height should not be based on the terrain, but instead on the height of the caster. This should relieve these problems. They often fall off bridges, (majestic bridge).