My favorite HS features are:
My most used feature is moving the scene (changing the angle of view) by holding the trigger button. This allows me to quickly change the angle several times per scene when the camera and, for example, the actor's dick don't line up with my position.
Autofocus helps with double vision of close objects. I don't use it all the time, but I have it assigned to a button so I can quickly turn on autofocus when a close object requires it. You can also adjust the transition speed and accuracy of the autofocus to reduce the effects that cause your headache.
Some of the advanced settings also help to reduce scaling problems. It can't to miracles, but at least make some of the videos with IDP problems (huge actors) more bearable.
Better integration with XBVR (e.g. synchronizing star ratings), but I guess you are not interested in going in that direction.
That said, I don't consider DeoVR a bad player. It still works fine and has many useful features like the meta data and cue points. I just miss the features mentioned above every time I switch between the two players.
