You can get around the 1000 character per post restriction by simply going back and editing your first post (and thus not have to waste your posts).
I presume you've never played a FF game before this because FF combat is not traditionally action-based. And ARR is actually far faster than how combat was in the original version of FFXIV (version 1.0, or rather, 1.0's battle system post 1.21 patch) and it's MMO predecessor, FFXI, both of which you basically just sat there on auto-attack trading punches with the enemy while slowly watching the TP gauge build up so that you could occasionally let rip with a weapon skill.
The GCD isn't actually that bad, as it's a nice balance between a full-on action-based system and the more turn-based battle systems of earlier games in the FF series. If you're expecting FFXIV's combat to be arcade-style button-mashing, then I'm afraid you will be sadly disappointed, as that is not how this game is designed, and perhaps this game is not for you.