One of the reasons why I find a GHod explanation unlikely is that a GHod has always been put just beyond the frontier of our understanding. As our understanding of our universe and our place in it has increased, so has the space accorded to a GHod.
We are now left with a GHod having a role before the big bang which is the current frontier territory. I think that it is unlikely that as we increase our understanding here that we will find a GHod, for the same reasons why we haven't found a GHod's hand in any of the other areas which we were told we would find it.
You see how small we are in relation to our solar system, galaxy, universe? So small and insignificant? Well look at it like this, what we know is as small as we are, but what can be known is as big as the rest of the universe.
Now tell ne again about frontiers?