One great universe that FFG could work with would be stargate.
There are no good stargate games, (the one made by fleet games was dismal, nice minis though)
There are so many types of games you could make (RPG, galaxy war, etc)
Not to mention Stargate has a large fan base, so that would insure instant sales! YAY!
Also Stargate has a very rich and detailed/established background.
This would so cement FFG as the best Games company in world, for me anyway