I would love to see a metronome automation track where you could turn it on and off, change the volume and possible change the sound or other settings. Sometimes, especially after drums are recorded, we don't want it except where the drums are silent and other time, we want it soft (to prevent bleed through headphones) but need to increase the volume for a loud portion of the song.
Yes, I know I can render it and do all this to the track but a simple automation would be faster.