It certainly doesn't sound bad, I think it was a great system in XI and would have made the cut if they took the best parts of that game to make the new one.
Yeah I hope for something similar. It would've been nice if the missions that stopped at rank 15 had carried on via the companies, but honestly I'm not sure that would work now considering you can select any company no matter where you start, unless they simply accommodate for that in the storyline.