[toast0]

Auto-hide makes the edge a dead zone... Can't interact with things there because something might shift in and take the interaction. (Not that I like the Mac dock anyway, but the same principle applies to auto-hide in other settings as well).

[fingerlocks]

You can set the dock size to be uselessly tiny so it’s basically invisible with auto-hide. It’s great, you have to really try hard to find it.

    defaults write com.apple.dock tilesize -integer 1; killall Dock.