You information seems to be either a little off or a little misleading. While ballads do build up to the coda they also have their uses as well, providing bonuses to your healing, your damage, and reducing the costs of your skills.
Envoyé par Wof
Well played minstrels can provide a lot to a group, in harmony they can provide a pretty nice buffs and some extra dps and decent healing.
In their healing stance (no stance) the healing is unparrelled, enough said.
Warspeech i consider a solo role and doesn't fit into groups imo, but i will say if you have a good WS mini they can put out some nice damage and will be able to fill that roll in a group setting if a champ, hunter, or rk isn't avaliable.
Rank 14 Minstrel, Rank 10 Rune-keeper, Rank 7 Champion
Rank 11 Weaver, Rank 11 Blackarrow, Rank 10 Reaver, Rank 10 Stalker, Rank 9 Defiler, Rank 7 Warleader