I was thinking on the bus on the way into work how none of the systems recreates the show and how shield strength is lost. So i thought a simple system could be put into place.
All shields start at 100 %
Phasers/Disrupters: -1d6 % form shields
Photon Torpedoes: -2d6 %
Quantum Torpedoes/Plasma Torpedoes: -3d6 %
Critiical success -1d6 % bonus
Thoughts?