For single target damage Stone II does as much as Holy, but for packs of 3+ mobs, give your tank Stoneskin and Regen and go to town. You'll out-DPS the damage dealers for a little while. I finally got comfortable doing this in AK and it's hilarious.

Putting that aside, I'm going to echo Geomancer. Conjurer pretty much is Geomancer already. I mean, I can't even necessarily think of what the Geomancer job would add to CNJ that it doesn't already do. It was a pretty limited job in Tactics, other than having status effects attached to the main attack and that's not particularly new or interesting without some serious development.

But more than that, I hope the treatment of ARC doesn't become the norm. It forces you to gimp one job while ending up with two jobs that share most of the same abilities anyway. Any new job they put on top of CNJ is just a job I'm not going to be able to play optimally without resetting my stats, and that's not good for anyone.