Personally i want a lot more intimacy. A lot more sensual/loving dirty talk in GFE type scenes and more focus on intimacy with the positions. Like Cowgirl with the girl leaning forward for the entire segment with a lot of kissing and simulated face touching, occasionally whispering in my ear. Missionary leaning forward with the girl's legs up over my shoulders or upper arms getting really deep.
Don't know why these things are rare in VR, i'm pretty sure most VR users want these but the studios are still shooting positions like relics from the 2D days when no one wanted to see a dude passionately making out with the girl if it meant blocking the view.