One of the ideas thrown around in the KSP chat (yes there is one), was having some/all of the stationary battleship bases defect to IKN. Along with the obvious ZoI change to include all of Kusari, this would bolster the IKN numbers to be a bit more reasonable against the KNF, and give them bases to raid the KNF from.
A Kusari/Liberty war would be interesting, but only if there was enough KNF willing to log against LN, otherwise LN would just stomp who ever logs.
A Kusari/Gallia war is bit more iffy Rp-wise, but could kinda work, however, GRN barely logs anymore with all of their current enemies, so why log/make a KNF ship to shoot GRN who don't log much and could already by shoot at by BAF or LN
Also, not sure where the "Kusari can't rebuild caps" came from, since the single remaining KNF guard base (Kure Shipyard) explicitly mentions rebuilding caps, and that Kusari will have a brand-spanking new fleet before long, since all the old ones blew up.
Anyway, once this update has sorted out Liberty and Bretonia, an update for Kusari would be great.