This is just an example but i have a friend who played Bard religiously and now he feels that bard is unnecessary. This is HIS opinion doesn't make it anymore right than another persons. One of his reasons is the fact that he doesn't get to use his songs that much. His raid group is well versed in managing there tp and mp. Along with the fact that most endgame content is played by better than the average players who are also good and managing theirs.