Swiftcast + Summon X exists for a reason...

Honestly, Pets are almost immune to most AoEs as it is; making it easier to heal pets will probably involve removing that (say good-bye to pets soaking Fireballs, and AV becomes terribad for ACN again...). Status effects that pose a real threat to pets are pretty uncommon (I can't even think of any off the top of my head, assuming you're using Garuda and at least managing her somewhat). The poison in AR...I've run the dungeon a few times and I'm not sure what you're talking about; is it the ground AoE you're talking about (which then a Place would solve the problem), or something that happens in melee range (which is completely preventable and completely your fault for letting Garuda be there)?