Update on Future UI Changes.

[Jinko]

I disagree with this, sadly. The point is not to be "told what each job's role is," but was (to my knowledge) to allow for macros that target T1 and T2 with cures, so you can always heal the main tank with the same button. If it doesn't work like this, then, frankly, I do think this was a pretty dumb addition. I would rather it just say the class/job in a 3-letter abbreviation, as opposed to trying to determine what role someone is playing (often correct, but not always).

It could be used for easier making of a party, it tells you what you have and what you are lacking.

It could be used as I said previously as marking a role for the match making system that the content finder will use. (In WoW you assign yourself a role before entering the queue)

Lets not forget they plan to add 2nd jobs for each class so the roles could possibly change across classes, for example GLA > PLD or GLA > DRK

CNJ was able to tank in certain situations before, though not as functionally as a GLA or MRD, and certainly not comparable to PLD or WAR. But of the cross-class abilities that allowed CNJ to have survivability to tank, WHM only loses Sanguine Rite and Decoy--Sanguine Rite is the biggest loss, but the addition of Regen could probably make up for the HP not spent curing yourself. You also gain access to Presence of Mind, which can allow for back-to-back stoneskin. WHM could still tank situationally--and like I said, the letters are, to my knowledge, for macroing purposes, and if I can't set the tank to whatever I want, it loses most of its usefulness (as I said, as opposed to simply displaying CNJ, WHM, GLA, etc. next to the names).

That aside, you make a fair point that "WAR isn't a caster," but WAR can be a tank OR a damage dealer--so what of them? Will they display as TA1? :P

CNJ may be able to "stay alive" taking hate with normal monsters but they sure as hell can't tank a boss so no they aren't tanks.