Fantasy or thematically wise they’re cool but in practice they’re far from it. They encourage a lot of degenerate gameplay and people will flame each other and cause drama over them. I think they should be kept as a self cast thing (I posted alternatives in my next reply).
Also while on the topic of buffs, it would be nice if other classes also get buffs like we had in mop. Right now we have
DH - Magic
Mage - Int
Monk - Physical
War - Attack
Priest - Stam
Just give more classes the same buffs so you can have alternatives to missing a class in your group.