Considering that I never used about half of the characters in any sort of real combat situation and not as sub in for the accidental death, I was fine with the way the fight played out. I would not want have to play 12 characters as well as I can play my main three and back up three. Forcing that sort of situation upon you would have been even worse, because there are some characters that I just don't like playing and literally don't have their timing down. So endless dying and repeating that boss would have made me hate it.

It's actually one of my favorite parts of the game because of the depressing nature of what is happening and that this is literately what ends up killing them all in the end. So I enjoy it because it is an important and emotional beat in the story.