I have not played “The Cave”, because I was not interested in the platform elements of the game but I know how the game works. The issue for me is that if I have to play every time the same 80% of the game to get only that 20% of different things, I’m sure that it would be boring as hell for me.
I have the same problem with that Full-Motion-Video game that I played a few weeks ago: it’s practically a movie. Too see a different branch of the story I have to watch again the already-watched part of the movie that comes before the fork.