1) Liberty, Bretonia, Mollys, Colonials join hands and with their best super minds and while the scientists think of a way to close a jump hole, the navies push back the GRN to Gallia and then close the hole. Same is done in Omicron Alpha with raiding the "ruthless" Outcasts in the process. Of course, some treaty will be signed not to use that knowledge ever again so it would be RP wise not to close additional holes, which seem to disappear in time anyway.
All the GRN forces left behind are to become some kind of gentlemen pirates or meet some other fate.
The Council and their gallic allies will adapt and unite with the colonial republic like a department or a part of the republic or adapt somewhere in Liberty( as it seems to be a multicultural republic).
2)
Some crazy Ion Storm comes and wipes half of the jump holes in Gallia leaving place for 2 options:
a) Half the jump holes in Gallia get unstable and disappear, and the systems become unreachable, thus Gallia remains with 4-5 systems.
b) The Storm wipes the jump holes to the Sirius sector leaving aftermaths like the one I pointed in section 1.
Meanwhile RHEINLAND STRONK!!!!! Rheinland organizes its forces as well as Kusari. I leave it to your imagination what will happen next.