To be fair, that dungeon essentially gave us a second trial connected to the relic. It's supposed to be at EX difficulty levels. If it pans out well, I'm fine with that trade off given how boring dungeons generally are. That being said, I'm more than a tad nervous they're taking too many gambles here. If we get something like 4.5 Blue Mage, 5.3 will feel incredibly hollow.
Dude. You need to chill. Many of us are extremely skeptical right now but getting your mammaries up when we have no concrete information does nothing. We can't criticise what we don't know. Put it this way, if they do announce some silly farm or garden mini-game to replace DD, you can be assured there will be many people screaming at how dumb a decision this was. But lets wait until we have some information to go with being losing our minds.
Beastmaster comes to mind. They did mention it as a potential Limited Job...