Why don't you let your melee stick on the boss and let the ranged and the caster deal with them without having your melee move.
Ok, I've been reading this thread and while I do 100% agree with what you said here, I (personally) am not going to rule BLM out when it comes to progression until Alexander is out and we can actually see what it's like in those instances.

Also, different raid groups work in different ways so I don't think it's right to assume anyone is causing any issue in their raid group if everyone in the group knows what's happening and is okay with it.

Yes BLM is kind of iffy right now in content but they will make changes and (hopefully) fix some of the current issues.