I've been playing a mix of mostly ikkuro, ackdarians, and humans (with the DW Extended mod) - so many races to try but for now my xp with these three have been mostly same:
-game starts, within first year it seems or fairly soon, random guy gets dumped.
-may just be coincidence but never had a guy with no / unrevealed stats. Like if I lose a spy (as dismissal, not kost in spying), it will be the one I got decent stats on and leveled up a bit, never it seems the useless spy that hasnt earned anything yet
-maybe its an ikkuro thing but when i have a leader and colony governor, the governor almost always plots and schemes against the ruler, and after my leader has gotten some good level ups - the coup d'etat happens and the governor kills the leader.
But then it kind of settles down, some more random dismisals later in game, but it seems the early ones almost seem scripted.
It reminds me of the hero shuffle in endless space, except there, you never lose a hero you actually picked, just the ones in your unpicked pool. If DW had a pool of chars you could pick from at game start, I'd much prefer that - and have the random dismissals be from the shuffle pool.