I would love to have a marker list in my left side zone but I am sure there are other things that would be handy to have in a zone. I could imagine having half of my channel strip in there like sends and inserts on whatever track is selected. I have the “Channel Settings” window open 90% of the time to deal with. I could see this on the bottom zone and include all the things we have on the right side with the midi and plugin info channel presets etc
+1
Expand the lower and right zone.