A case could be made is that perhaps downsizing the main crew would had helped certain characters have more character moments. Nix Bodhi and Baze. Chirrut indeed was one of the better ones in that movie and I would had liked him to expand on his views about the Force/supposed Church of the Force. Baze, I assume, was meant to be representative of a refugee due to Imperial invasion of his home planet (based off the trailer). Instead he’s more of a tag along friend of Chirrut. Bodhi serves more like a plot device than a character.
Ideally, Rogue One could had shined with this angle:
Jyn is unmoved about the tales of Jedi/the Force, perhaps a skeptic initially.
Cassian does believe in those tales, and fights for the hope of making those old tales a reality.
Chirrut embodies that the Force is indeed real for Jyn and inspires her to realize it’s no longer just about helping her father but the vital importance of the Rebellion’s resilience. Also gives Cassian peace, even in sacrifice, that the Jedi may overthrow the Empire.

It gives clash to Jyn and Cassian in the beginning because their end goal is the same, but motivations may be off, which may cause misunderstandings/disagreements and then eventual acceptance/understanding towards the end.

K-2SO would remain unchanged.