I would like to discuss how exactly a space empire works (internally). Just to get hang of it, to better understand it (it does not need to be directly usable in game design). Why emperor is the emperor? Why they don't try to overthrow him? What happens if the emperor dies (or he can't die)? Why it can't revert to democracy? What are the imperial institutions? What is the social structure? Who rule the planets? How law is enforced? Who makes law?
It can any kind of empire you like (since there are different definitions I guess), as long as:
- the emperor has real power (not necessarily absolute power, but a lot of power)
- it's not a federation of planets
- it's not a democracy
Preferably if this was an old, big, bureaucratic empire in decline, but if you can explain how a different kind of empire works I would be delighted to read about it too.