You are giving us the option to use MATE in the next release right? :-)
There is the main Github at https://github.com/mate-desktop and Linux Mint's
implementation through their repositories:
1. Add to sources.list:
deb http://packages.linuxmint.com/ lisa main upstream import
2. In terminal:
sudo apt-get update && sudo apt-get install linuxmint-keyring
3. Finally:
sudo apt-get update && sudo apt-get install mint-meta-mate
Of course by default it uses Mint's default theme, but it can be changed with
Trisquel's Gnome 2 compatible theme to look just like regular Trisquel.
