Global cool down questions and thoughts.

[Slappah]

You could try playing ninja

Between huton and all the damn SS they love throwing onto nin gear, and then sch haste buff and maybe get crazier and an ast throws on that skillspeed buff too, you could get as low as 1ish second on the gcd, maybe even lower depending


-EDIT-
But yes. You're asking for too much. It's a design choice. Idk if you noticed but this isn't an extremely hardcore MMO. The game is also cross-platform with ps3+ps4.
I couldn't imagine a baseline 1 second GCD when playing on controller, especially ps3. You might as well just /afk if it was like that and you're doing 72m PvP, diadem or S rank hunts.

They aren't going to change the GCD. It's simply not gonna happen.
The entire game has been designed around this 2.5 GCD, and it works fine. It can feel slow at first bit after having played for over a year I'm perfectly content with it. It feels natural to me at this point. I like it.
Would I mind if it was faster? No. But at this point I don't want it faster. The game plays just fine.

Plus at level 60 every job has a lot of off-gcd skills they throw in so it's not like you're sitting there..hit a button, wait 2.5 seconds then hit another. You hit a GCD, hit an off gcd, another GCD, another off gcd, cooldowns, utilities.