Here's an idea to make on every trailer page some kind of rating system (for example, for "Daredevil" trailer #1 page: average rating for this trailer by 28 registered users is 4.2/10. When you clicking on rating details, you can see list of these users with their rating for this trailer, like
tysoy - 2
Kn'htrack - 7
Gaumont - 5
etc.
All the same as in IMDb, but only for trailers There can be also different top lists like "Top 100 highest rated trailers of all time by movie-list users" or "Top 10 users who rated most of trailers".
It can be difficult to realise, but it will happen, it will be good addition for movie-list trailer pages.