as a fellow game dev I would highly suggest adding a lot of that sort of stuff so you know what players are more drawn to and will want to see more of. even if the player cant see what your tracking its great to be able to do so as a dev
That's true but I won't start tracking which choices the players choose. That might be too much. The playtime on the other hand though, that's quite useful. I can do polls and ask for the popularity of girls or which important decisions was taken at point x if necessary. How would you do it on the other hand? :)