A Theory on the "Two Godzillas"

Recently, I've been reading about theories suggesting that a second Godzilla will join the fray.  Now, while these might be considered food for thought for some people, I can't help but think about it.  I have a theory, even though I'm not convinced that there is a second Godzilla.  My theory goes along with what a friend on DeviantArt suggested to me, that the Godzillas and Mutos in prehistoric times (or whenever they're truly from) are natural enemies and the Mutos need radiation for their young to gestate.  So they attack Godzillas, which produce their own radioactivity, kill them, then lay their eggs inside their bodies allowing the decaying radiation to irrigate the eggs.  Now, that was what Wewewezing had suggested, which sounded cool, but here comes my addative.  What if after the eggs are laid, it kind of functions like a Xenomorph?  After the egg has gestated, it would yeild the host's DNA and it's adult form would be similar to the host.  What if we get to see Godzilla vs. a Muto-Hybrid Godzilla? Just a thought I had. Let me know what you think, good, bad or indifferent.