I am still new to the VR experience from a customer's standpoint, and although I enjoy what it brings to the table, I think that with your experience in still photography, you can make a HUGE difference. Here is why:
The problem with video in general is that it is impossible to properly ogle a girl. With a set of stills, you can focus on a particular photo and just stare at it, letting your fantasies play out in whatever time it takes. When a still set is created properly, there is a real sense of planning involved. Playboy and Penthouse did this, but in my view, the best was J. Stephen Hicks from Digital Desire, whom I have commented on in my posting in this forum under the title "Dripping Pussies." A lot of eroticism is wrapped up, say, just in a photo of a covered girl's pussy, where the mound of a hanging labia pushes out a sheer panty, or uncovered, as she stands with her legs slightly apart, and through the gap of her upper thigh, you see extended inner labia lips hanging down, silhouetted against a light background behind her. These types of photos are pretty intense, and you know already the many, many ways that a model's best assets can be presented in a still photo. But those carefully framed shots are so often totally lost in videos -- whether 2D or 3D. Even if they appear, they are lost in the continual movement of the action taking place.
What I have been trying to get at in my little suggestions on this site is the idea of using a very different approach to filming. Instead of being in a rush to get the girl nude and get a dick in her, what I am suggesting is first think about those many type of still photos that are particularly erotic before filming starts. Plan how the model needs to be in those positions, and then spend a portion of the film slowly -- and I mean REALLY SLOWLY -- caressing the camera across her body, letting the mind soak in the erotic view. And especially -- and I cannot emphasize this enough -- work hard on getting in very close as girl's private parts are SLOWLY exposed.
When you say that you want to do solo, these ideas can be particularly effective, IMHO. There are certainly "striptease" videos here, and there are certainly sequences where the camera caresses the model enabling that ogling, but too often not enough, and too often, not enough close-ups. Again, the essence here is to sear sexual images of poses into the viewer's mind and give him the time to properly fantasize as he looks upward as a girl SLOWLY lowers herself onto his face, where she is mostly just staying still a few inches above his face, letting him take in the view of each fold of her pussy. Yes, there are videos that include such things, and IMHO, those scenes are the most memorable.
You mentioned that you weren't familiar with InTheCrack. Well, I should point out that they seem to have the right idea about ogling a girl, particularly her pussy and ass -- a point they emphasize on their philosophy page on their website. (I only wish they had a higher percentage of pretty girls, but I wish that all the time about all the sites.) And they will also often have the girl do a lot of gaping, which to my surprise, seems to be seriously lacking in the VR scenes I have come across so far. I realize that many might not like deep gaping, but with the way that SLR here has bookmarks in their videos, that can be skipped for those that don't like it. I personally found that it was "an acquired taste" which I learned to enjoy when done right. Now I find that I really dig seeing a girl's urethra and especially the inner ridges of her vaginal walls. And of course, those hidden gems of cum found throughout her hole, whether inside or dripping out. It is one thing to watch a girl stick her fingers into herself. It is a whole other thing to explore what awaits a guy's dick when he is in her. And that comes with good gaping -- meaning close-in camera work, with careful focus and good lighting, where the pussy just seems to come alive. Forget the speculum here. Just a girl's fingers pulling herself wide to let the camera in is more than sufficient.
I could go on and on here in detailed descriptions of the types of shots I am talking about, whether you are a gaping fan or not. You mentioned that you are favorable to pissing sequences. I am one who simply likes to see a girl piss on the ground or clear punch bowl rather than another person. And again, for me, the idea is to get in close. In my view, any time a girl squats with her legs apart in pissing position, it practically demands a piss to follow. But the best is to get in close and see it come out of her piss hole, You as an experienced erotic photographer should know what I am getting at in all of what I say here. The keyword here is ogle. That is the essence of what is missing in both 2D and 3D videos: the idea of focusing more on the pose and its framing rather than just the action. The ability to provide camera work that enables sufficient ogling can raise VR scenes to a new standard in sexuality. It is much more difficult to do because it means more than just getting the technical parts right -- which in VR is especially hard from what I understand. But it moves it into the realm of what J. Stephen Hicks was doing: and that was artistry
Whether you take my ideas into account or not, I wish you the best. And maybe you can be the one to take erotic VR to a new level.
ADDENDUM: After posting this, I noticed that you had responded to Blaze466 where it appears that he was saying much the same as what I am saying and that you appeared to agree. Sorry about that. But I'll just leave this comment here anyway in the hopes that some other director/photographer might pick up the idea if he didn't quite get what Blaze466 was saying.