It should be noted,as Loaf said, that the Mantu(well,according to WCP at least)are not realy an evil race,so chances are that if ConFed did make contact with them, it would be as allies, or at least mutual interstellar powers, and not as enemies.I wonder who this other race is.We also know that ConFed, the Kilrathi ,and the Mantu have to deal with the race mentioned in Action Stations as 10,000 light years into the core and incoming.We know that they are methodocally coming this way system by system so it is only a matter of time before they arrive.Then there are all the other countless thosands of threats in the Galaxy...ConFed has long hard road ahead of them.