When I was looking into going digital, automation was the deciding thing for me. The irony is that none of my standalones do it !
What I was thinking at the time {this was like, 2004} was that I could mix in sections. So I could take, say, the first minute of a 15 minute song, pan, EQ etc and get it exactly as I wanted it, then record/mixdown that section. Then basically go through each section and do likewise.
Did I totally misunderstand it ?