Currently, there are only a couple options to specify what the apple pencil’s double-tap function can do. It would be really productive to be able to specify a selection of a tool or toggle between 2 tools.

For example:
I’m drawing via pen or pencil and not only want to deselect the element but switch to the selection tool to move it around or quickly select another object. I order to do that, I currently double-tap to deselect and then have to directly tap on the select tool. On keyboard, when I want to create a curve, move the curve, and then continue editing it, all I have to do is hit ESC to cancel out of the pen tool and switch to selection tool.