Its ffxiv combat really so slow and boring?

[MomomiMomi]

How would they be able to build a system where both could coincide?

And now we're back at the beginning. They leave all the abilities alone, but give us a "Combo" button we could also add to our hotbar.

Want to put your abilities on your hotbar as you have them now? Go for it. Want to add the combo button instead? Then do it.

Want to do both at the same time? You can.