Remebering that SureFires are really designed to help LEO/Military etc with weapon-related illumination. The light is very high quality, but "focused" at the typical ranges at which confrontations are required.
The TurboHeads allow far better longer range illumination, but still with consideration for the use with firearms.
I think it's possible to create a tighter, brighter spot, but the beam quality would be harder maintain.
I don't know if it would be better to produce a new lamp/reflector combo or a BeamFilter, but the BeamFilter could be flipped out of the way when not required. This "Lens" would have to be very carefully and precisely designed...
I think this is a great idea!
Al