Are we talking flashlight sales, or fixed lighting applications?
If it's the former, I dare say there isn't a single engineer at Cree that cares. If it's the later, I do see a potential for mixing warm white / neutral white, or neutral white plus amber which will yield a higher CRI. That emitter would then shift over into the flashlight arena and likely be quite popular.
Sorry, but UV is for very specialized applications, and would either be very expensive, or have very limited production runs, or both.