Not sure how it would work..,
Unless they're invisible to all except for buffs on you're person to let others know your using them.., since i don't know how much usage they'd be each time they're called out.<interesting idea.., though the question I have, like I said.., is how this will affect things server wise.>
by which I mean they could end up being Glorified DoTs/HoTs like Esteem.