I'm sorry, Abwehran Commander. I honestly thought that you'd get more people to command around for the Gate power armored romp. Unfortunately, that does not seem to be the case.
You were supposed to also get Yoroko, Takuma and Kaida... but these people aren't active anymore (or when prodded into posting they only make token appearances that can't be relied on).
Unofficially, those three characters are out of this plot. Yoroko and Kaida were probably transferred out at Yamatai as new people came in. As for Takuma, he essentially 'knows too much' to be allowed to leave, so, I figure that he ends up being an NPC operating on some dark, noisy corner of Miharu.
Six is not a 'bad' number, though (4 players, 2 NPCs). It might help keep things moving at a faster pace.