Aspherical lens in the lens (i dont know whether they are now in S5)
Remove modulation at medium and low brightness, as it did in the Fly IQ444 Diamond 2 Quattro, Motorola Razr HD (XT925) and LG G Flex
Remove all profiles except the cinema mode, because at testers gray is blue, red is orange, they specially put other profiles that have very cold tone (6500-6700K - cinema mode, 7500-8000K - others). Anyway all image are designed for SRGB standard, and enhanced range is color distortion and oversaturation
Metal Body (antennas should be behind the plastic, glass or other material, but not metal, so did HTC, Apple and Sony, otherwise the connection will be very bad)
It would be ideal. Isocell, improved super amoled (brightness, viewing angles, color reproduction in cinema mode (106% instead of 122%, 100%-ideal), anti-glare), waterproof, interface speed and battery life is awesome.