I would also like to see this optrion. I can do this tghorugh the gmail interface, however I woujld love to do thjis in thunderbirtd and push tghe updates to the gmail websitge making an exact 1 and or 2 way sync between the two.
I would love to see a keyboard only version of this implmentation. I as a keyboard only user / screen reader user cannot drag drop between address books or subgroups. A right click function would also be ideal for those of who cannot use drag / dro...
