You can set your gamepad to still work when XIV isn't set as active window, and spamming standar synth gets you through every synth as long as you're in a good rank range. So I'm just browsing the internet and watching TV while pressing the X button.
The only pause I have to make is to reinput the recipe's ingredients.
I guess what I'm trying to say is ...
We need a button to repeat the last synth.