Make a small change that would break a class completely.

[Kuurei]

Bards songs have a duration and straight mana cost when cast and do not debuff the singer's damage. Multiple songs can be active at one time by using the old Everquest technique of "twisting" your songs.

This. This I could get behind, and there'd probably finally be a DPS I can bring myself to play (This is coming from a person who very rarely plays tanks/healers but does so this time b/c I'm having more fun in those roles...)