A mouse is just a 2D pointing device. It works inside a flat rectangle but it's in no way comparable to a motion controller in VR.
Somewhere like the starmap where you have to accurately select something in 3D space its limitations become painfully clear, at least if you're already spoiled by 3D controllers like the ones that come with the Vive.
Clicking on stuff on a floating 2D menu is not the most "VR" way of doing things, but many VR games use that and even there a motion controller isn't at least any worse than a mouse. Although it's usually a "laser pointer" shot out of the hand
What I wanted to say is that mouse-type control is more efficient that "aerobic exercises" a'la Minority Report

Also, the laser pointer thingy is still cumbersome, especially twisting your hand to point all the way down to Steam settings in VR

Raw data does it a bit better, treating the ViWand like a gun of sorts.
Regarding galaxy map in Elite, yes, touch controls would work there but then you would need to switch from HOTAS to ViWands / OTouchs everytime which would be a nightmare, actually. I find the HOTAS / gamepad controls for galaxy map sufficiently effective, not saying it cant be better though

We're still in VR infancy, developers are experimenting with different control schemes, there is no "clear winner" yet. If we will have fully functional and accurate haptic feedback gloves someday, we could design an interface where you for example rest your hand comfortably on the desk and call "steering" area in which you finger-point where you want to steer. The possibilities for such interfaces are limitless, the tech just needs to catch up.
Of course, these things require balancing and are not so obvious, for example star citizen had used trackIR to track gimballed weapons in the past, and there was an uproar that its "unfair" to other players and they caved and removed that. Being a trackIR user I fail to see how is it more unfair than using a mouse+kbd vs using a HOTAS but oh well

. Anyhow you need to tread even more carefully with VR interfaces because majority of players simply don't have it
