Sounds dumb at first, but let me explain;
I was a user of Avant Window Navigator before upgrades to various things broke it, and at the time it was one of the most sophisticated dock applications available, which could be used as a complete replacement to GNOME panels. (I know, I did it.)
It was very feature-rich, simple to use, and in the last revisions of the software before development waned it had the capability to support multiple docks, something lacking in both Plank and DockbarX.
So I do wonder, what’s stopping anyone, especially the developers of Plank from just bringing this back, or at the very least making a “New Plank” with a stupid-simple default that’s really a veiled revamp of AWN? A lot of the base code should still be usable, and if multi-dock functionality is figured out for GTK3 it would most likely be a superior offering.
###How I contributed
The very last thing I did as a contribution, while MATE was just getting its feet wet and still being a complete rip of GNOME 2 was to modify an existing applet for AWN in MATE 1.5 and less that loaded the Mint Menu for Linux Mint MATE users. Once MATE was modified to use dconf it was over for AWN… for now. So, anybody want to try making it work in present-day MATE?