Do you want to see the expected time a movie will finish on the library, an item’s details page or the player? Most players should already have an option to switch between the remaining duration and the current end time.
There’s already an existing suggestion discussing an option to automatically start the next episode if skipping credits. I suggest you comment/vote in that thread in order to help us avoid distracting or cannibalizing votes. Unless I’m missing some unique aspect of that part of your suggestion I’ll remove that part.
As a side note: please stick with the rules for the feature suggestion forum an focus on one suggestion per thread. That way other users can vote for those individual features and don’t have to go with the entire package… this usually gives you better feedback and more votes (if other users like the features).
