IF it does end up that the Contruum win separates Ossus from the rest of the Republic, I'm assuming it would still take a Dominion to gain it, I suppose the best term would be protectorate? There's plenty to do on a planet that isn't taking over or looting, especially if we're setting up guardianship as such. Setting up additional defenses and whatnot could take at least a hundred posts unless they're rather large ones.
That said, we could easily do another dom to the south in the time remaining before map update. Scillal would allow southward movement but also somewhat east, possibly enough to put the Hutts on edge but not feel threatened enough that they strike first. And it's a known starship producer, not that said detail matters much with the dev threads here.