This might be a little involved but I think it could really make the website stand out. Pornhub has something like this enabled too - videos can have lovense enabled so that when you watch it, the vibration goes up or down according to what the levels are in the video. Think of it as a video timeline, where minute 1 is level 1, minute 2 is level 2, and you can adjust the levels and lengths of vibration/patterns of vibration in this way. It seems somewhat straight forward, especially with API existing out there for it. I know a lot of my users have lovense, so it could be something that could even be behind a $ wall, where higher priced subscriptions have access to the lovense version of videos.