Why choose to use Call to Greatness on ONLY one class? That's why the Turbine gods gave us the Ost Dunhoth armor set! Full-Fellowship Call to Greatness FTW! Oh, and hey, on bosses which reset cooldowns upon fight-start (like all the bosses in OD or like the Road to Erebor raids), why not get off TWO CONSECUTIVE Call to Greatnesses?!? Yeah, how hot is THAT. Of course... it might kill your Burglar as they burst through that extra positional damage and pull aggro, but... yeah.
Oh, and btw? When my group needs uber heals? I heal them myself. Captains can bust out their Rally Cries by using Time of Need, if you really think your group needs that Rally Cry right away. Your crit rating should be high enough for you to keep War-Cry up. And there is no way I'm saving such a potent skill just for a Captain because they want to put out a bit more healing, sorry.
Narlinde, level 100 Minstrel, Rank 11, Member of Trucido ~ Windfola