Since addons aren't supported by XIV, I've figured out a good way to keep up with procs and ability charges was to have a hotbar close to the center of the screen just to see them light up as reactive stuff becomes available.
Another example, is Gunbreaker. It has way more actions than a lot of jobs, and to me in particular, I have a faster reaction by clicking my defensives instead of keybinding them if they are in the middle of the screen. This would be extra handy as well.
Having this option extended to non-controller users would be a nice QoL for those that use bars to keep track of procs/cooldowns/etc.