That's an awesome idea & project, but mightn't it feel jarringly like being surrounded by people talking at you?

I think I'd at least want them all in the, say, central 160deg in front of me. At which point I wonder how good the 'spatialisation' is, how many people could be meaningfully supported.

Because you can't just have alternate speakers spaced out for maximal distinction - the same speaker suddenly coming from somewhere else would be even more jarring.

Really cool though.