It is clear to me that currently Microsoft does not have a way to automatically upload/download packages for attestation signing. But, I was curious how much anyone has automated up to that point. Specifically around EV signing. What I've found so far is the smart card (dongle) disables remote and automated keyboard input. So one has to type the password physically into the keyboard.
I'm personally okay with the extra security and validation around EV signing. Frankly, for me at least, driver releases don't happen extremely frequently throughout the year. So having to manually do this every once and a while isn't a big deal. In any event I'm curious what others have done.