Call it FIRST STRIKE,
then part 2 can be THE BORG STRIKE BACK
and part three can be RETURN OF THE AUSMONAUTS
you can't have two missions in a row with Strike in them pinky, it just seems strange
how about something inspired by dr who or torchwood. all i can think of is something like Encounter at FarPoint and thats neither (apart from it already being done). :p get craig in on it, he'll come up with something.