doublevr Perhaps you could integrate it with a modified version of the Pornstars page? You can then use the number of favourites to deduce how popular the performers are among the general SLR customer base.
For example, if a performer has 2k likes but only 5 videos, and none of them are hardcore, then it's very likely that their VR hardcore debut will be a success.
Keep in mind that number of likes in isolation is not a good metric. For example, there might be an absolute stunner with only one video. Many people may not have seen that video. On the other hand, a performer with 50 different videos will have more exposure and have more opportunities to be added to a users' favourites.
For this reason, likes per video would be a more appropriate metric. If a performer has 5k likes with just one video, they're a relatively safe casting bet.
As for new performers without any existing videos, one solution might be to allow SLR users to create a pornstar page for them and allow users to vote on them with likes.