Add option to set tone curve node by clicking on the image
When using the tone curve, the eye dropper can currently be used to indicate which part of the histogram a pixel comes from.
It would be really nice to enhance the eye dropper so that instead of just indicating the histogram position, it can add a node to the curve at that point.
I would suggest the easiest way to do this would retain the current eye dropper behaviour, but add a keypress combination (eg CTRL + Click) to enable the new functionality.
This is a functionality available in lightroom, so I can provide a video link to an example of the functionality if required.