I appreciate the fact that cutscenes are unskippable. New players can enjoy the most important and interesting revelations of the last stretch of the main campaign without losing the feel that they are part of the team beating the game.

However, I think it proves to be useless when the entire party has already beaten the thing. I would suggest something like this:

1. Only veteran players in the party: cutscenes are skippable, rewards reduced.
2. At least one new player in the party: cutscenes are unskippable, rewards maintained as they are today.

I think it is easier work than completely remaking the dungeons or splitting it in order to reduce cutscenes. It would serve the benefit of allowing new players to enjoy while giving ample rewards to veterans, but also allowing veteran parties to rush it for most of the runs.