I know each person has their own fetish so it's not so mush to ask for specific scenes but to focus more on well-done POV and less talking from the girls.
By well-done meaning shot in a way that it is a believable point of view - some videos you can see the guy's chest and doesn't make it believable even when adjusting the view tilt. Or camera too close to the dick as if our heads are in the middle of our stomach. The girls can also talk a lot less please. I don't need to hear every 10 seconds everything she is doing or thinking - if I was blind I wouldn't have a VR headset and this isn't ASMR (though if you had ASMR-geared videos then that would probably be desirable there).
Well-done also more realistic in the positions and sex acts. Maybe this one is dependent on the performer. There are a lot of scenes where a girl simply does not maintain the specific acts more than 10-15 seconds at a time before adjusting or pausing to do something lame like talk or kiss the guy's chest. Yeah OK sparingly but when I'm having sex in real life most of the time it's the same position for 2-3 minutes and if VR scenes were like that it would be easier to trick the mind and get the fap timing right.
Another thing that makes a video better is don't have the girls look back over their shoulders so much during doggie style. In real life occasional look backs are normal but most of the doggie style parts of videos here the girls are looking back over their shoulders almost the whole time, which twists their body and makes the actual perception of pleasure not matching real life. Remember, this is VR meaning the guy in the headset (me) wants the experience to simulate reality. If I want to watch porn where the girl is acting all "porn-like" to get the best view of their bodies doing contorted positions, I'll watch regular 2D porn. This is VR. The best videos are the ones where it really feels like the visual angles and sex actions are believable. All the better when that is the case and the girl is way hotter than I would experience in real life.
One other thing - the videos where the camera moves cause nausea. The only time the camera should move from its position is if it was an interactive 3D rendered world we can walk around in to any spot we want. If it's a video that we can't look around in, any camera movement especially jerky moves creates nausea.
As for themes, I would love to see more school girl outfits, role play like that, or more "oops you caught me undressing" type of stuff, but more real. Like imagine what a guy's fantasy might really be on how something plays out. Not like typical porn where everything comes across as fake, but trying to simulate some reality into it. This may again be limited by the performers but I've seen some here which have been done well like this, but they are rare. An example I haven't seen here would be like those shoplifter getting caught videos, the girl is talked into stuff in the act of getting strip-searched and punished for stealing.
Another good one is a simulation of fucking a girl while a room full of people watch. But has to seem real and not like all the people all of a sudden decide it's an orgy and the scene switches from fucking one girl to another. Put a sense of awkwardness into it. Do the angles matching doing it on the floor or a couch. Not going from standing up to sitting down to doggie looking down every 2 minutes. Keep it consistent in the shots.
More ideas are BJ creampie (girl swallows). A lot of the time I get BJs in real life, the girl at least takes it in even if she doesn't swallow. Too much porn wanting to show the money shot and if I wanted to see that I'd watch 2D porn. I'd like a porn that simulates a real BJ. Girl literally sucking slowly and consistently for maybe 10 or 12 minutes, not over-doing the slurpy sounds, and slowing down just as the gizz goes into her mouth.
Another one is shower videos. Fucking in the shower.
Another one is hiring a home delivery stripper. She acts like she's not supposed to do anything more than dance but then gradually does more.
This one may be boring to other guys but maybe scenes from within a strip club. Could be a fake strip club or a real one. Hell you might even strike a deal with some clubs to stick a 360 camera in a stage seat and let us be a voyeur to a live club feed. That would have made you a killing during the peak of COVID.