I haven't seen this mentioned anywhere else - I would LOVE to have some fine-grained +/- volume adjustment buttons in DeoVR.
It's really, really difficult to make fine adjustments to the volume when you're trying to move a slider with a virtual laser pointer, so having something that you can click to increase/decrease volume by a small amount would be great.
I'm usually playing with the volume pretty low since the Valve Index has off-ear speakers and I don't really want it broadcasting the soundtrack too far, so there's a fine line between "quiet enough" and "inaudible" 😅