The playtest campaign that I ran involved 6 players, all playing human characters, some civilian, some military, working on a joint operation for AstroNavy Intelligence and FedPol. Campaign was mixed intrigue/military, with incursion of aliens, space pirates, galactic conspiracy, illegal arms dealers, neo-yakuza and new revolutionary biotech, hunting recreated "Barsoom" monsters on Mars, trouble at the Bank of Luna, discovery of extremophile alien races, space and planetbound battles against the Silth and Interdicted humans, saving Ring City from destruction, helping a Madji colony, and saving the Federation from a potential war against one of the older races of the galaxy. Among other things.
Best wishes,
Nicholas