To be honest, the incredibly advanced knowledge of the AoL channelers means that they would probably have a great shot at creating/imagining some kind of SL-substitute. Those guys figured out "vacuoles" for Light's sake! They understood it so well that even Moghedien - a non-researcher - knew a good bit about them. Our Randland guys don't know what stars are, or whether there are other planets. It was luck and providence and 'Finnland that gave Rand his SL-idea, so I think you're doing the AoL AS a bit of an injustice.

But I do like your theorizing on the taint and the way it burns itself out by corrupting physical bodies.