Let's say I want to play Buff mode in Co-op with some friends. However, not everyone wants to be a specific character. This becomes an issue in areas that require a specific character to progress. Giving an option to change the Player 1 character individually from the campaign selected would allow us to play on Survivor's map with any character, which would fix this issue. I have yet to find a mod that allows this, so this would be a very good addition.