A kind of 'joined up dots/black holes', would suggest a universe contracting, not expanding, so the idea fails before it even gets off the ground.It's never going to happen that way. Ah but 'if it is expanding' .....there are no doubts it is, and the same method of calculation which says two galaxies are drawing closer together is the same as that which says the Universe is expanding.That isn't an inconsistency btw