On controller, you're still restricting yourself to what is "easily" adjacent to your stun macro, whereas keyboard users can use any macro with the same amount of ease.
Both are easy to do. It's not a restriction. For a controller user its, all about macro placement, and setting yourself up. My healing macro ha snothing to do with my Stun macro. I can easily make Heal Ctrl 1, and stun Alt 1. And in a stun order, there is NO need for me to NEVER move the stun cursor to something else. Because A. Stun has a recast time, and B. It can be someone elses turn. Even when i use a KB, and its MY TURN to stun gates of hades, I try to limit what I'm casting because Gates can come any sec, and no matter how fast I can emergency cure, we might die because Gates of hades comes when im casting cure 3. So i leave the curing up to the whms, rdm, and other blms not stunning. I even sometimes stun him with Temporal shift on Blu. I don't care how "easy" you feel one is over the other. If someone esle takes one extra step to accomplish what you did one 2 steps all that matters is the time. If you're in the middle of Cure, NO KB will allow you to stop cure to stun.