Even though I did not tried it (was waiting for response from A-net) I’d love to have option for this kind of controls in-game. This would greatly enhance my pve experience (playing necro with staff) and general enjoyment from the game.
Currently the way I’m playing I have right click down almost all the time and placing aoes fill bad and awkward.
This small change in controls proposed by Thypari seems to make gameplay a lot more fluid and natural and this is just offence to anet devs that it is still not implemented in-game.
Oh, only thing, I would add option to toggle it on/off with hotkey. It would be better than “hold key to show mouse” in instances when we want to check AH/inventory/guild. And add option to show mouse automatically if one of such windows appear. Having more options is always good.