I remember a moment when i had the Fundamentalist happen on one turn, Jagged Knife the next. Then Iconians of all the people decimated me with their pathetic ships, cause i lost my primary manufacturing worlds to those events. The Dread Lords popped up just before i ceased to exist too..
Fundamentalists + Jagged Knife = Hegemony of Minor Races. First a group of peace-lovers overthrow their evil rulers and establish an interstellar civilization, then a criminal organization infiltrates governments across the galaxy, then the Precursors arrive from nowhere to get revenge, all while the Precursors' ex-slavelings are conquering you.
It would've been weirder if some Good AI race finds a Precursor device giving them infinite strength, then gets the ethical-flip event, turning Evil, and then getting crippled by the Fundamentalists, only to be finished off by the Jagged Knife.
Or if the Pirates and Peacekeepers arrived and began a war against each other(and everyone else), while weakling-race-X on the other end of the Gigantic galaxy gets the Precursor device, and then subspace tears and slows all ships down to 5pc/wk! The ultimate turning of tables...