... lack of Undead, Mechanical, and Humanoid enemies. I have leveled so many cool pets with abilities against these families, but they sit unused. ... I'm not even using any of the Spirit pets or any of the raid pets
those seem to be pvp pets. i have one undead 25 that i never use, and my human/ele 25's are also unused ... some aren't even true elemental pets (all the shale spiders).
the spirit/raid pets i mostly have in pvp crews, i stop levelling some pets at 10,15, or 20, depending on what level they get an OP ability... then i only use them for pvp at those levels.
i agree with your idea about the "super pets" being something that is not like all the others... could a sha pet be undead? mogu pet elemental? troll magic pet? don't need any more aquas or critters.