In terms of positions, I'd like to see more F/F interaction incorporated into the FFM scenes.
This includes girls sucking each other's tits and eating each other out without focusing on the guy. But also, in positions that incorporate the guy. For instance, doggy in which the girl in doggy position is eating out the other girl; or, similarly, missionary in which the other girl is sitting on the girl's face.
I hate it when the camera gets too close. In cowgirl position, I like to be able to see the model's face and the model's body well - and see the face and tits simultaneously, rather than having to pan up and down to see each - and if the face or body is within inches of my face I can't do that. The same for missionary - if it's so close up that I can't see her torso and face at the same time, I skip forward.
Of course, I realize that for some guys, the stuff I hate is the stuff that does it for them. So it goes. :-p
Similarly, I see a lot of guys requesting fewer tattoos. For me, the more tattoos and piercings and day-glow hair, the better. I'm not a fan of fake tits or lips, but obviously the girls wouldn't be getting those if there weren't guys who love it.
Before the model takes her clothes off, I'd like more shots where the camera is five or six feet away, so it's possible to see the entire girl, including her legs, comfortably. This is common in striptease videos (like the onlytease videos), but I'd like to see a minute or two of that in full sex videos, if there's some sort of story or interaction before the sex begins.
Anyway, thank you for seeking feedback.