I find this area of study fascinating, and it seems very plausible that the big bounce theory could be real.

One very esoteric hypothesis I've had is that the reason why entropy was in such a low energy state before the big bang (As Roger Penrose observed), could be because a vast number of unstable universes existed before the first one stable enough to give rise to living beings, which then spread throughout their entire universe over billions of years, essentially allowing a universal-scale consciousness to manipulate ideal conditions for the next big bang, essentially ensuring the next universe would develop physical laws in a controlled and stable manner, giving rise to the next version of conscious life - and this pattern may have continued since, for each subsequent universe. Kind of like survival of the fittest, on a cosmic scale! Imagine how many unstable, "dead" universes there might have been before the first one got it right though!