FFG was the Firestorm Focus Group - from what I could gather, it was a former group of beta testers.
With regards to the community ruleset, I think they'll have to be based on the 2.0 set of both systems (Orange book for FSA). We can't really use 2.5 for DW, since most the stats were never really released (except the Egyptians - and compare their drones to the CoA drones), and 3.0 FSA was going to have some significant changes to the ruleset. Doesn't mean things can't be cleaned up - the DW2.5 boarding rules, for example, are a heck of a lot easier to work with compared to 2.0. And I think even the SAS and Carrier rules could also be carried over.
Proabably leave the Fleet Action rules at v2.5, though - those were fully released.