Having multiple writers will almost guarantee "cohesion" problems with the story. How come you don't want to sculpt everything yourself in order to keep in perfect line with the vision and direction? It's not like you're George Lucas.
“ ' The team threw a Hail Mary to George, saying the game would have more credibility if the apprentice had a Darth title,' a Force Unleashed team member says. Lucas agreed that this situation made sense for Sith royalty, and offered up two Darth titles for the team to choose from. 'He threw out "Darth Icky" and "Darth Insanius." There was a pregnant pause in the room after that. People waiting for George to say "just kidding," but it never comes, and he just moved on to another point.' "