Every time somebody tries to interject realism into a combat system wherein my four-foot-tall elf thing somehow shoots arrows that cause the wind to hurt somebody every three seconds for a while into giant dragons my brain explodes.
I wasn't talking realism, I was talking from a mechanics point of view. Forcing people to be careful about superfluous motion in exchange for higher DPS makes sense. However, people need to be able to effectively stance dance or whatnot in fights where you have to move a lot, and it sounds like Bards can't do that very well. If they cannot stance dance, then the penalty for moving needs to be smaller.