I'm ready to go to Bahamut, but held off to finish up other quests. And now I've noticed that Rank 6 hunts, which used to melt like popsicles, now suddenly annihilate my team even though we're 10 levels higher now. Rank 7, which used to be a tough but do-able fight, isn't even on the radar of possibility now. What gives? Have you all noticed this?