I'm kind of at odds with the game in regards to tanking having just leveled a tank to cap, because there's been no opportunity to "learn" end-game tanking, because everything up to Bismarck EX/Rav EX/Thordan/Minstrel's Ballad is trivialized, even synced (and you probably won't find a group willing to minimum IL sync the old content) so to learn end-game tanking you're just thrown into the deep end.
I say this since I just helped some FC mates through Bis EX, but we couldn't get the tank swap down for the snakes, and the time we cleared it RNG said "no you don't get to do the tank swap." Granted, it's probably one of the harder tank swaps in the game, since if you mess it up you're cleaving the party or the other tank. But we couldn't even practice that because it was two wipes and then the third run no tank swap was needed, so we didn't even get to practice the part we were having problems with.
What, you don't want to run the Alex floors you need for whatever tokens you have left 32 times?!