Please god stop saying dps.
Oh, do you mean as a description for a damage dealer or damage per second? Either way, it's a common term so expect to see it.
No, it's a WoW term. It just happens that many people played WoW. Doesn't mean it's a common term.
No, it's an acronym that sees common usage in a number of MMOs. I really do suggest that you get used to it.
I would wager that half to most of the players in FFXIV will be from FFXI (even if they played WoW at some point), thus DPS will not be a "common term."
It will likely be just as (if not more) common as "DD". If you're going to get hung up on a simple term, you're going to have a very miserable time in FFXIV.
But WoW was a skill spam game. FFXI was not. I believe WoW had some way to tell you your damage per second and if it didn't I know there was at least a plugin. FFXI did not.
FFXIV won't be about spamming skills, given that you're using some vision of an ATB/TP bar and not 500 abilities on a cooldown. So don't "expect to see it."
Just...stop. Please. Exaggerations don't help your argument and the combat system in FFXIV is shaping up to be as similar to that of WoW as it is to FFXI. Like it or not, if you opt to play FFXIV you're going to be sharing a new
game with a lot of people with varied MMO backgrounds and if you think for even half a second that they're going to happily tolerate being expected to observe FFXI terminology conventions, you're in for a disappointment.