The purpose of dice in a cooperative story is to resolve issues where the different storytellers (different players, the GM) are at odds about what should happen. If everyone at the table *agrees* that one person's story is the best version, then you don't need to roll, there's no dispute to resolve.
Matthew Lillard criticized the industry for prioritizing celebrities over voice actors in animation:
“The ability to carry a film, as the lead of a film with only a voice, is a power very few people have. The idea that they keep hiring crappy celebrities to carry huge films is killing us.”