All the family rivalry and politics and jockeying for power is there. As is the background threat (white walkers / Grisks), those guarding against it while the families fight (Night's Watch / Expansionary Defence Fleet), the chosen one with the mystic powers of seeing into the past / future (Bran / Cheery), seven kingdoms / six star systems...

You are also free from most of the established Star Wars canon, being in the unknown regions (aka The Chaos).

It writes itself!