Has any astronomer ever considered the possibility that the universe is smaller than the observable universe?

If the universe if finite and unbounded then there is no edge to the universe but there are a finite number of galaxies, same way there is no edge to the surface of a balloon or how in old video games when you fly off the top edge of the screen you end up at the bottom edge of the screen. That would mean we could be looking at the same galaxies at different angles and at different points in their history on opposite sides of our sky. If true there may be some similarities between the structures of cosmic filaments in different directions in space.