I had an idea, instead of an npc buff bot that buffs you and (if your pet is buffed by this npc) your pet, or even bringing back the old buffs, why not a make ONE buff that gives bases and spec buffs? All in one, one spell to cast, simple and sweet. If you make pet buffs, give them level 25 buffs.
Another idea for pet buffs, ONE buff that gives them all the buffs(at lvl 25 value), only classes that can have a pet can have it. You can place the pet buff in the abilities slot like you did with the purifiers' baseline buffs...
Just an idea I had...