Interesting Concept -- Unmaking the Universe

It is interesting to imagine what would happen during a reverse "Big Bang." An implosion of dark matter, sucking in all existence into a compacted ball of nothingness. Think of it... all of the cosmos compressing into something so extremely small that it is unfathomable. Then, as soon as that dense mass could not contain itself in that small space any longer, another "Big Bang" occurs; this time a new cosmos forms. One so completely different than the one before, yet so much the same-- like parallel dimensions, only not existing in parallel but rather in sequence. Maybe then the implosion would take place again, only this time reversing existence. Everything would recreate itself, but it would happen in super-speed rewind. How glorious would that be? I presume we would be recreated again but from death to birth, and we would have no notion of existing backwards. Or, perhaps could it be that we remembered our birth starting from death from our birth in the previous dimension? I am tripping on exhaustion.