You make another argument about bosses getting to easy and to fast to kill. Daneos can always buff up the bosses to make it take just as long as you want.
Oh god, if he buffed bosses to suit attack speed parties, that'd be REALLY bad. Now attack speed would be the only way to win instead of just an optional way to cheese things.
It'd be fine going back to the way it was. It was sharing attack speed to parties that made everyone's attack skills useless. Attack speed doesn't need to be removed or made worthless like it is now, just......mildly nerfed. Wouldn't removing the ability to stack those two class buffs together be the perfect solution for that?
That way Poko's and Karma's are still as good as they've always been, but their combination in every party isn't as much of a "necessity".