Thumbnails I think it's kind of weird we cant create thumbnails. It seems like a natural thing to have.

duration of the videos increase the minimum length of videos up to 50

The ability to change your rating after already rating it I accidentally clicked below 5-stars on a Death Grips video, and was unable to remedy my mistake.

Annotations we need this

Channel Links Having the option to put social media links in the about section helps to prevent users to make banners with links in it with the risk of it to go over the file size limit.