If you have contact with Larken, maybe you could ask him to upload a few of his most popular, yet missing videos. I know he has done tons of videos, but right now only his most recent ones seem to be available on vigilante.tv.
Afaik, the staff at TDV has contacted every single video creator and let them know that they can earn Hive coins from vigilante.tv if they just let TDV know what their Hive username is. Many of the video creators include a link in their video descriptions too, to their channel on vigilante.tv which is great because that will bring even more people to Hive.
I don't have any better contact with Larken than through mainstream social media messaging channels - he may see a message, he may not.
Uploading content from other people without their explicit consent is likely to attract a lot of downvotes from the Hive police. On the other hand, marketing a Hive platform off the back of that content and bringing in new users and investment might be enough to ward them off. Good luck!