Multiple Universe Theory (not the quantum one)

This is a proposal for an alternative theory for the formation of the universe.  We know that the universe seems to have begun around 14 bya with what is known as the big bang.  Consider a black hole where gravity is so intense that the escape velocity of the gravity well exceeds the speed of light.  This creates a singularity event where only quantum processes can remove matter from the black hole.  In a way this may be like an isolated universe.  Now suppose there is a super universe that has a black hole.  A black hole forms in that universe and it creates our universe.  So our entire universe could be one of many black holes in this other universe.  Then there could DC be a superduperuniverse above that one and so on and so on.  Now maybe being inside a black hole is not really like a universe.  There could still be some type of event in the super universe that could result in sub universe formation.  What would the properties of this super universe be like? And what type of singularity like event could result in a universe like ours being created.  Would it be possible to detect the super universe or one of the sub other sub universes.  Is it possible ed to construct a physics theory that would support this.  Maybe the physical constants of the universe, such as the speed of light, or the gravitation constant, would be different in other universes.  Is it possible to create abstract universes to conduct thought experiments to verify this.