As long as Trisquel aims to offer a "classic" desktop that looks good and
doesn't require 3d acceleration by default, the options are pretty limited
right now.
Gnome fallback/classic tries to mimic many Gnome 2 features, but it really is
barebones and a chore to customize. Like I said before, MATE is now supported
fully upstream and by switching the default DE to it, we get more options.
The Gnome 2 versions of Trisquel were some of the best looking out there and
we already have stable themes that can be used and improved upon where needed
for MATE. The current implementation is hacky and really isn't working to be
honest.
As for Magic's issue with ConsoleKit, I'm sure it can be resolved in a future
MATE release if its important.