So you want a standard dummy like those that already exist in various locations but with the ability to reset ogcd abilities if you mess up while testing a rotation. While I suppose this falls under a QoL request, I feel having to wait for an ability to come back off cooldown is a teaching tool in itself since you'll need to learn how to react to situations leaving you without everything ready to go or modify your rotation with a couple things still charging, which will happen in actual fights.

Maybe they could add this as a feature to dummies once you engage them? I'm not against this just don't feel it's that great for practicing as opposed to what we have now.