I guess would boring to say this over and over again, but the randomization is a staple.
I'll just leave this here: With fixed damage, a mere 1HP could mean the difference between life and death. With randomization, differences in health would only increase the chance of death.
If we didn't want any randomization, then please remove the spread in the SMG and Shotgun.
BUT -- If the community simply isn't open to the idea of randomization, what about damage drop?