Well, there were so many plot twists maybe I've lost count/track of characters.

Or maybe it's not so much the characters (although I do wonder what happened to the guy (?) who could turn into a table) but just the plot itself. Right here at the end we get a bald statement about 'manipulating galactic events'-- implying some pretty massive backstory details -- and yet no explanation. How was this 'manipulating' done from a fleet of thousands of warships that had to remain concealed? What sort of resources does a warfleet carry for long-term (
really long term) covert activities? What sort of 'galactic events' do you manipulate, or
can you manipulate, to influence the behavior of aliens that are no longer even in contact with the culture/civilization you have access to? (Living entirely on this single mothership, it doesn't seem likely that they are very susceptible to infiltration or psy-ops...) It's just a very sudden 'pow' ending that seems disappointing because it so abrupt.