Advantages to using the mixer?

I found this discussion in the C7 forum, and Subpantaliss made a good post about his use of the zones feature
in C7 and how he sets up submixes.

I suppose the mixer is a good place to do the routing in a complex mix as he lays out here.
Otherwise, to me it seems like the mixer is something I’d be fine without, since automating a lot of tracks
renders the mixer useless for balancing levels.

As an aside, I learned while doing a collab that even the master bus can be added to the arrange window.
I recieved an entire Cubase project from a collaborator, and the master out was in the arrange window.
You can’t add it by right clicking in the track section of the arrange window and selecting the type of track - so I asked him how he did it.
you simply need to hit the (W) write button on the stereo out in the mixer, then turn it off - now the stereo out
appears in the arrange window. Great for fade ins and fade outs.