Feature Request - White balance in Curves

Dear Support,
Could you make the following correction easier to achieve with alignment and snapping? Such as vertical lock on move and horizontal lock on move (holding shift key for instance).
Even a auto align vertical to cursor or choosen curves point.
You get what I am trying to achive, just an easier way to do what is in the youtube vidoe below.

Kind regards,
Robert
Could you make the following correction easier to achieve with alignment and snapping? Such as vertical lock on move and horizontal lock on move (holding shift key for instance).
Even a auto align vertical to cursor or choosen curves point.
You get what I am trying to achive, just an easier way to do what is in the youtube vidoe below.

Kind regards,
Robert