I agree, as it is, unless the Imps protect it or the interdictor heavily, a couple groups of Y-wings will just role through the thing. hell 5 squadrons of Y-wings can bring that imperial fleet in the Demo to its knees in seconds. That vic was rendered useless in no time flat. I don't think interdictors are going to be very worth it. Unless you have a massive fleet, a fleet that should be out fighting not turtling, then the interdictors are going to go to hell. If a few squads of Y-wings can be so effective against Vics and Acclamators, and interdictors or other specialty units are typically weaker in games because of their special ability advantage, then the interdictors are useless. Keep them in your fighting fleets, not in your defense fleets unless you're going for a trap.