Do we really need Alphinaud?

[Evangela]

Spoilers ahead:

Clearly you haven't been paying attention to the story, then. He's one of the few protagonists that has undergone a lot of character development since his original introduction. He has also fought alongside us on multiple occasions and is responsible for the push to save Estinien.

If he needs more experience he should finish developing himself before trying to lead people in wars. The war that determine the future of the nation/continent is not a school for him to become an adult. And why would national leaders even listen to this brat to begin with? It doesn't make sense.

[Kaurie]

If he needs more experience he should finish developing himself before trying to lead people in wars. The war that determine the future of the nation/continent is not a school for him to become an adult. And why would national leaders even listen to this brat to begin with? It doesn't make sense.

Character development does not mean "becoming an adult" it is used to describe the narrative growth of a character as a result of experiences/plot. It's central to any decent story telling.