RP-wise (and forum-wise), Liberty is now hub between Kusari and Bretonia. Why? First of all, Gallia, secondly the recent inRP ban on trade from Taus - what connects with point one. On the sidenote, wouldn't that ban be rather a shoot on the feet for Bretonia, which is nearly on the edge of catastrophe? That would also make Kusari a hub for Liberty-Rheinland goods - what for example KTA would try to do in future to avoid embargo. That wouldn't be a problem, if those items were Kusari labeled, or something.
According to this, Kusari has nothing to say against Liberty at the moment, despite Rheinland-Liberty-Gallic relations. They need to remain neutral or new Republic won't stand long. I mean, it is already crippled, because if there would be Civil War, there are Republicans, Shogunate followers, Imperials and even Matriachsts. Not to mention two big megacorporations and space yakuza.
But for Liberty... That would be interesting thing if two wars became one big war with Gallic Kingdom, Kusari-Rheinland Alliance and Liberty-Bretonia Alliance. Three side war, which in fact would be two-sided war.
And there's always SCRA, they are not too big, but they could be also a problem.
