Do you have any clue if that effectively ever happens?The next thing I'm going to do is fiddle the crewmember's "loyality" and "alignment" attributes. These are part of a system whereby officers are randomly assigned alignment "good" or "evil", plus a loyalty rating, which are kept secret from the player. Some sidequests have checks and if you take an action which is deemed "good", then good officers gain loyalty and evil officers lose loyalty; vice versa if the action is regarded as "evil". There's no benefit for having a loyal officer but if his loyalty drops too far then he deserts.
I know work was done on that system so that it technically functions, but as far as I am aware, the chance of it ever triggering is extremely remote to the point that it never really does.