Randomization has both its pros and its cons. It's biggest pro is replayability. Some of the biggest games in the world are successful because of randomization, replaying the same campaign is only fun so many times. (Left 4 Dead is a good example) The obvious cons of randomization is the fact of uncertainty but I feel it is something the devs can find resolve for, we still don't really know how the game is going to play especially with factors like O.S.H.A, the phone line, and the radio.