Yeah. A true killer.
You could go with 3-3-3-4 for the Defender and 3-3-3-2 for the Avenger as well.
This would disqualify the Chiss Clawcraft for ever. Thats maybe no big deal - in the end it depents on how many waves FFG is going to release for this game. sooner or later we have all EU ships in and the game is complete.
But if FFG is going to release the Defender now with , lets say a 3-3-3-3, they would disqualify the Chiss Clawcraft as well as the Avenger. Yet again, maybe a 3-3-3-8 Defender would be a Imperial ship to come for the epic mode