A suggestion about the check box 'bind auto attack move to left-click' in the hotkey options

When I try to normal cast a direction-targeted ability with the 'bind auto attack move to left-click' check box checked, if I press the ability hotkey and then left-click, the cast is cancelled. I would be glad if you change the left-click from cancelling the cast to actually finishing the cast. ​ I know that there is a warning on the check box that tells me to use shift + left click in such cases. But that is way too complicated to use, and we have right click as a good alternative to cancel the normal cast of the direction-targeted ability. I do not think binding left click as a cancel command as well is necessary. ​ In addition, I would be happy if you make my champion not move when left clicking lots of other HUDs with the check box checked. For the cast of left clicking the minimap, I understand that my champion should move, but I think left clicking the scoreboard, practice tool and many other HUDs are not the cases. I believe most of the players would not intend to move their champions by clicking the scoreboard HUDs. ​ To conclude, I think 'bind auto attack move to left-click' is an excellent option for fast kiting, but some inconveniences hinder me from using this option. I believe fixing this will help me a lot of other ADC players :)​