Well, yes, Roussillon DOES exist and is filled with Council, and to a lesser extent Maquis, Brigand, IMG and now Kusari Exile forces/civilians. Majority of the garrisoned forces are for defense however, and even then we need to stay secret, as these defenses are still low. Strikes against the GRN are in a guerilla fashion with Frontier defenses in Leeds in the past. Now I don't know where we hit GRN other than in the Taus... rest of Bretonia for sure, but dunno if with small craft in a guerilla fashion or with something bigger like at Leeds. We will definitely not bring massive stuff to Magellan, at least not within the near future.
(InRP of course, as I'm no god to control indies...)
I already knew Roussillon existed (it would've been ridiculous if I would've actually thought it didn't...). Anyway, I thought the Council had the intention of regrouping and rebuilding forces in Roussillon and eventually striking back at the Gallic Border Worlds and Core Worlds. In fact, for some time I thought some systems would've returned in Council hands in 4.87 (I thought this before the release of the 4.87 betas), after noticing, instead, that the royalists pushed even farther. I guess this stuff is for 4.88 or something in the long-term future.