I think it's a good idea, but wouldn't that work more like Tik Tok? My understanding (I don't use it, but my wife does, and I've read on it a bit) is that the algorithm there tracks how much time you spend watching certain videos and then feeds up more like the ones you watch more often.
I would love a feature that served up only the positions I like. There are tons of videos I only watch the seated or lying BJs, HJs, and CG positions. If I like the performer(s), I might get into missionary as well which can seem very immersive and intimate, but I almost always skip doggie, RCG, and most any other positions where I can't see her face or breasts.
It would be amazing to have videos automatically feed into the player with just those positions I like--and if I don't like that particular performer or setting, I could just press one button on the controller to "swipe" to the next position.
