Done a lot of pandemic streaming (as you do), tend to use images of live dj's fleetingly (because blokes stooping over laptops is boring) but this approach is interesting. Have used a lot of image slide shows or media over the top of BG media plus text overlays. Visuals I keep going back to include time lapse, festivals (burning man, ozora are interesting visually), nature, classic sci-fi plus feeding in pre mixed VJ sets works.
Once you have copied the scene, and made scene2, you can edit the two sloping windows and change the source file. So dont disable them just edit their properties and change the source to your space loop