SLRO is probably one of the best in the game right now, if not the best. The scenes lately have been spectacular and the customer feedback great. I am also a longtime customer of JAV VR and I feel some of the innovative things they do would be a nice incorporation to Western VR:
Multi-part "series" with chapters 30-60 mins long depicting an escalating storyline. Most JAV VR are in this format (2-8 parts, can be up to 3 hrs long in total) from initial encounter, then slowly transitioning to intimacy. SLRO had a great Getaway series recently and I hope more will come soon.
Related to 1, videos where the male is "inexperienced" So far almost all VR films depict the male talent as some super talented guy at sex. Some users of VR porn are not experienced or even virgins, so it might be good to have some scenes where the male talent can "act" inexperienced. JAV VR "breaking virginity" scenes are quite abundant, and hot. I'd love to see scenes where the male isn't able to hold it and cums multiple times during a scene.
More taboo scenes, MILF+young. This is why I am looking forward to the upcoming Jessica Ryan+Lily Lou scene.
Creampies are great but so are oral creampies! JAV VR does this in 90%+ of their scenes but strangely most of the time the actress spits the cum out onto a piece of tissue instead of playing with it.
Spit-exchange: Super immersive thing JAV actresses do in VR where they drool out spit into the viewers' mouth. I've yet to see a Western VR scene doing that yet and I think it would be awesome to see it.