Ha ha.... I don't know what I'm talking about.
I never fail to get excited about an idea that has a fundamental flaw! Oh well. Actually, I can't think of a fundamental flaw of my hypothesis, just that it's an idea looking for evidence. That's very unscientific. The evidence should come first, then the theory.
Newer images of the cosmic background anisotropy show unprecendented detail. If this image were really just thousands of separate doppler shifts overlaid one on top of another, to figure out how many shells of the multiverse are overlaid, we might as well count the pixels in the image and divide by two.
Source: WMAP data
More info for anyone who's interested.