Just reading the Wiki myself, so I'm not too deep into the lore of it yet. I just found it funny that pretty much every time I go into space in a game, somewhere there's an Empire being slavers and very much worth kicking in the teeth.
"The Empire is less technologically dependent than the Federation, choosing to keep and employ slaves for the work which machines would usually perform in other parts of the universe. "
"The Imperial Law is seen and enforced by Senators who themselves are above the law. They can order executions, and can even kill people themselves, though sometimes (rarely) they may be held to account for their actions by the Emperor. In the Empire very little is illegal, but many things are frowned upon, like excessive use of narcotics.[1]"
Then there's the corporatist Federation where corps may very well be running the show behind the Federal government, even to the point of picking and choosing presidents, and money buys pretty much whatever you want from law enforcement, and "The Alliance was formed circa 3230 AD in Alioth, and portrays itself as a beacon of human rights and democracy in an increasingly autocratic universe. It does not conform to the political ideals of the totalitarian Empire, or the authoritarian Federation and there is much cultural variation among its members. This, however, means they often struggle to achieve political agreement" a bit of a clusterfuck.
I like this setting.