Really? As far as I could see, Foreman Crusher, only 1 guy has to move out of the rocks. That's not a huge change. Foreman Crusher changes aggro after frenzy, so the melee dps has to chase him down, while the ranged continue to dps. The argument has always been that ranged can continue to dps while melee has to do the chasing.
Karagga, if you are constantly being interrupted in dps because of the gravity wells, you haven't spaced yourselves out enough and I suggest you tell your ops group to be more spatially aware or the healers have to heal more for nothing. Ranged dps has the advantage in Karagga because they really can move a lot less.
And as for Bonethrasher.
Sentinel: 1444dps
Sage: 1011dps
Commando: 971dps and 959dps.