I would like to see the other people who are on a mission to kill Jason in the films that can be radioed like Tommy. There's Rob from part 4. He could carry a hunting rifle like in the movie. There's also Creighton Duke. I don't know what weapon he would use, but I think this would add variety to the game.
I think when you use the radio to call for help one of the 3 will answer and come for help instead of it being Tommy every single time.