If there was going to be a Defiant, why would they perk it? The thing had one of the worst records in the RAF in the beginning of the war and it was pulled from service, if I recall.
Well, if it's the target tug variant, they likely wouldn't have to perk it. But... the one with the 4 .303s in that mannable turret would be monster. Imagine a plane with almost the performance of a fighter, and a buzz saw of lazer .303s in the back. Be a bit rough on the HOs though.
Maybe 8 perks or so, about like the C-hog.
Charon