Hey Davin
At least your not objecting to the term "asserted"
. I was going to use "hypothesized" in its place, but Sinny pointed out that a hypothesis should come with a means for testing - which I haven't sorted out yet.
Why pre Big Bang? Well its a major talking point on religion vs. science, i.e. did God begin creation at the big bang and there was nothing else before it, or was the a natural cause? Scientific theories lend themselves to the later.
One of the keys to the provided model to enable a "not completely out of left field silly assertion" (note I'm avoiding the term "reasoned assertion"), is that the model must predict a vastly increased capacity - beyond our universe- for evolution. By opening up the past (pre big bang) to an infinite regress this does just that.
Of course maybe your concerned that I'm forgetting about the present? Yes, sure - their may be many, possibly infinite number of universes presently existing alongside ours - all or some of which at least may have allowed for evolution.
The more evolution enabled universes, the more chance a mighty and strong superhero would have been born!!!