This has been brought up before but no traction was gained. Bring in the ability to auto play trailers when hovering over a movie poster or when browsing a specific movie/tv show. There is also a Reddit post about this which has gained popularity.
The ability should be there to turn this feature off as well.
This is a great way to enrich the movie viewing experience especially when browsing large collections or watching on non-desktop platforms.
That looks very much like the existing feature suggestion I had linked above. In that case you best comment/vote in that thread in order to avoid distracting or cannibalizing votes.