It becomes increasingly harder to tell a good story if you keep adding things to it.
Let me add the exponential growth of possibilities in which the story/the world/the outcomes/the relationships between our fellow travelers [...] evolve, as an example for this increase.
Obviously this somewhere ends in things getting out of hand, unless there's a quality trade-off, in terms of impact on the adventure and therefore the depth of characters, in favor of quantity.
It's more like going to a sushi restaurant with good reputation and order Omakase (instead of a conveyor belt sushi place).
