Core-OC alliance in general isn't a problem. It's problem specifically here, because Core act not like they are intended by event design(What should they do - wait intil Corsairs or Outcasts win, jump to Theta, engage the remaining forces and wipe them out or die trying. What they do - form with Outcasts and shoot Corsairs alongside them). So it's either all of Core getting warned for this, or event objective for Core should be changed to reflect what's happening
