(Sorry for the late reply levelling Thief) I agree that Bard songs should be more than just replacement effects. It would be nice to see a wider variety of skills but I think for balancing issues, that would not work. I propose something similar but not unbalanced,
Say instead of draining mp, the bard uses mp and casts a song that lasts for a certain amount of time. So 30sec paeon, or 30 sec ballad. Also it would be nice to see new paeons and ballads with different effects such as what you mentioned, increased sub stats or perhaps even enhances healing or hp regen
