Individual routes having bearing on main story: significant or not?

[Takafumi]

Might want to label the topic as a Spoiler topic, or cover that Little Busters text in spoiler tags~

Rewrite maybe. I honestly believe that it didn’t, because even though he needed the characters to fight alongside him in Moon route, I don’t think the completion of their routes were necessary to summon them to the fight.

You’re focusing too much on Kotarou there. It wasn’t him who needed the routes, it was Kagari.