Optional proximity voice, faux proximity.

[WhiteHusky]

I can imagine a couple situations traditional "right in the ear" VC would be preferred.

And maybe faux proximity where in a radius voices are heard clearly before it begins to drop off outside the radius.

[TheHellBox]

Rodio sadly doesn't allow for that. It can be done by controlling sources volume, but it had drawbacks.
It's possible however to place ears extremely close, so it's almost this. I'll look at it