So you're talking about placing app windows everywhere? Then you're limited to placing apple's available apps for the device everywhere around you aren't you? Which doesn't sound like what you want. I'm taking your 3 monitors comment to mean you're not running 3 monitors worth of mobile apps (because that would be wild if you were!). The 360 degree desktop setup here is going to be more like 360 degrees of ipad apps seems like. Maybe a windows remote desktop sort of app with multiple instances/windows all around you? Multiple safari instances all connected to some sort of web based remote desktop? I too want "spatial computing" to be more platform agnostic and want to be able to just paste applications or desktops on blank walls or floating in space.