4. Community oriented Tag (Genre) and Review system.
Many people use separate 3rd party websites to organize, find, and classify their Japanese AV content.
This is because the system on R18 and DMM is not very thorough or comprehensive.
A lot of the times, there are not enough Tags, Genres, or indicators for titles.
Most of the multi-actress "amateur" content do not have proper actress tags, even though they might be a famous actress.
Providing and option for the subscribed or premium members to add tags, genres, description and reviews would allow R18 to become a true one-stop source for all Japanese AV related information and content.
A tag or description system can be mostly driven and moderated by the community via upvote & downvote system.
ie. A subscriber to that Channel or Purchaser of the video is able to add a new genre/tag to the video.
If it's a newly submitted genre/tag, it's added to the description and starts with 2 upvotes.
If two other members who have subscribed to the channel or purchased the video in question, find that genre/tag to be misleading or incorrect, they can downvote.
The 2 downvotes cancel out the upvotes, and the genre/tag is removed from the description.
Same can be applied to things like Actress names and Reviews.
Would be surprised if any of the suggestions posted on this thread gets implemented