What do you mean by scenes? Like pictures for those scenes? If yes, then I need first to decide how to portrait the main character.
Oh yeah that would be cool but I can see the difficulty as commissioning a certain look and then everybody complaining about said look since they would want it to be their "Ideal Image".
Only solution I could think of atm would be to get sketches and hold a poll about which they would like the main char to look like, but either way some people would be unhappy, so it's pretty problematic either way. xD