So going beyond the idea of a Dyson Sphere where could a Dyson Universe be possible?
The Idea of a Dyson Universe is like a Dyson sphere with massive celestial engineering and construction in the spaces between stars and planets.
Instead of building a sphere around a star matter is imported from alternative universes to build the structures in the space between stars and turning the universe into a vast city.
Obviously such an object would need technology that breaks the laws of reality. Would there be a risk of the entire construction collapsing in on itself and turning the universe into a massive black hole?