Removing the Blackburn Roc turret would not cure the design

Would a fixed forward gun position instead of a turret make the Blackburn Roc useful?

It would improve performance, but the result would still be a fighter-like Skua without the qualities of a purpose-built modern interceptor.

Removing the turret reduces weight and drag while allowing a conventional forward-firing armament. Those changes would make the aircraft easier to use as a fighter. The underlying Roc airframe still derives from the Blackburn Skua and lacks the performance of a purpose-designed interceptor. The conversion improves a flawed turret-fighter concept without producing a first-class carrier fighter.