[quote=Sigma]
Those do sound interesting. Especially the Idea for Final Frontier :)Although what you describe is close to what I had in mind, but larger scale-ish(depends on players), In either scenarios, players will option of being nations or none-national factions. Mix it up a bit.(On another note, I noticed your old name, welcome back silux :D )
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I stayed hidden for too long until Asuras figured out my ruse :lol

But yeah, I only mention this because I know you love to GM NRP games and have a tremendous capacity for generating story lines and plots for various worlds and such. If you were to try Adruis, you could even have players design their own mini-factions within one empire: one character plays the court, another the army, another plays pirates. That way there would be clear conflict with a clear goal and an even clearer disparity between the different capabilities of each player. Or...something. However I think you should ideally stick with large scale or small scale exclusively. In principle having a mixture of the two sounds appealing, but people who choose to play nations over factions soon develop an e-penis power complex, even if they assure you they won't. 
Your ideas definitely have a helluva lot of potential, just add a little twist to the NRP genre and you'll get people flocking. I know I will :)