Brings up an interesting questions, are you going to mix Feds and Klingons on the same team, since they still can't group even if they're teamed?
Logically we could do that if we set it up as a 10v10 and one of the two teams of five was a Klingon group. If we have enough people I can see us trying a 10v10 but it might get a little chaotic for our first event.
So at this time I would say probably not since we will be most likely sticking with the 5v5 arena format unless we decide to mix things up and do Salvage instead or unless everyone on the team agrees to let the Klingon in ungrouped.
Most likely we'll see how many people we have at the meeting area first then see what options we have available.