The Collection-Tags are a nice feature to manually combine all movies that belong together just like all Marvel-Movies for example. Sadly to find a collection is not as easy as it could be. I would really appreciate if the movies of the collections are shown under each movie just like “similar” or “more of this genre”.
Feature request already in this thread, as well as at least one other with some really good mock ups, too. Let’s not spread the votes too thinly. Add a like to the first post to vote for it.
Early 2021 clean-up: implemented (collections showing as related items, can be displayed in-line with the library, dedicated collections tab)