Well, the roll rates match the NACA chart for the aircraft that are on it (P-38 w/boosted ailerons, P-39, P-40, P-47, P-51, Spitfire (clipped and unclipped), Fw190, Typhoon and A6M (maybe plus some I forgot)) so I don't know what can be done. Rolling an aircraft doesn't cause blackouts, so making it do so in the game would be highly unrealistic. I agree there are maneuvers being pulled in game that couldn't be done in reality, but I don't think the roll rates are the culprit.