45% (pure guess, for humor) As I will agree that it does seem like an antiquated set, Beyond maybe a little number tweaking, I think it's pretty solid. Tons of people love it, and the blending of resistence and defense. Get the job done 95% of the time. Is it truly Invulnerable? No. Should it be, No. I really think until a much larger portion of the overwhelming number of invuln players start complaining about something, I feel this set is "working as intended".
Sorry being a negative nancy, but I dont feel invuln changes are needed at this time.