I'd really like this. I'll get the positionals down eventually whenever I stick with the same job for a while, but then when I switch between jobs, it's like starting over from scratch each time.

With a controller, I don't even have the option of just mousing over the abilities to remind myself where each one's positional is. (With the cross-hotbars, we get the icon and name, but no tooltip.) The only way to see them is to open the Actions and Traits window and find the skill there so I can select it and review the description. That's how I review my skills when returning to a job I haven't played in a while, but it's not exactly something I can review while running from one mob group to another in a dungeon.

I even briefly considered making single skill macros just so that I could name the skills myself combining their standard name with their position, but I didn't want to lose the ability to queue skills in advance, which macros can't do. Having markers for it on the icons would be great.