“Reveal Parameter on Write” is a nice feature, but one that you don’t always want to have enabled. Currently, the only way to toggle it is to open the Automation Panel, clicking on the cog button and (un)checking the option. This is a lot slower than using a keycommand.
Nothing against your request for a key command, but I think manual drawing in an automation lane shouldn’t trigger the reveal function at all, since you have the lane open already.