JP groups are already pugging BA so it doesn't need to be nerfed and in people mostly complain about "needing a very specific comp" to do BA but its not true at all. A dps can tank with the right logograms. a healer can do decent damage with magic burst + aether weaver. and healing tools are available as well. You can pick up gaps in your parties using logograms excellently. Anyone can do orbs on ozma because of the damage reduction cooldowns and a dps could even mt ozma with proper logos and defensive magicite.

If you have a solid understand of BA and the logograms then you can do anything you want in there.