I've done this ever since 1.0 but ARR pretty much ruined the keybinds since 1.0 had arrow keys as menu keys regardless of your keybinds so I had arrow keys and shift+arrow keys on camera movement. This enabled me to move the camera with shift+arrow even if there was a menu open. This wasn't possible with ARR so I had to bind the menu keys to WASD. I pretty much only use AoE skills on mouse since I'm too lazy to make those macros with <t> that you have to spam 20 times before it actually does it.

Only problem with FFXI-type keys is the sheer amount of skills... I'm having trouble setting SMN abilities since there's way too many for just 3 rows of numbers.