I looked at Marvel's universe.
Transcendent era civilization had way too much fun creating it.
Can we have Transcendent world wonder, that essentially recreates such multiverse?
Can we make use of empty tech - Nanopunk, that is in Nanotech era - for discovering various anomalies in microscale hinting possibility of warp drive, stable exotic atoms, cold fusion and some other things?
Essentially Nanopunk bonuses would be increase in culture/science/great person generation.
Also space units, that are producible on earth would get extra range simulating increased focus on space program.
This thread can be renamed to General Future Eras Discussions or something like that - essentially it is about manipulation of matter, energy, space, time and reality starting with simple stuff of Industrial era.