Personally I've never liked harem (3 or more girls) type videos in regular JAV, it's a lot worse in JAV VR, just a bunch of girls whimpering, competing with one another to who can be the loudest (even when they're not even having sex) with absolutely no intimacy at all. It's intimacy that VR excels at, and like you said Casshern, the experience of it.
I've stated this before, but I prefer close up's largely because of the quality of the videos - usually they're quite low resolution or clarity so having a girl even half a body's length away is already pretty fuzzy. Which is why then I prefer the lotus position or even standing in VR videos (the WankzVR video with Nikkita Diamond is a good example of this), in JAV VR it also minimises the amount of censorship mosaic on screen which I'm normally fine with in regular JAV, but with VR it ties back into the experience and immersion, it kills it for me.