Regarding suiciding - we obviously want everyone to play their characters as if they were living people that are capable of dying and understandably afraid to die. It's hard to make a "hardline" rule regarding this because how characters face death is as varied as there are attitudes towards dying (that is to say, a lot).
Is a buttmad capwhore flying into the sun because the PLAYER is furious about getting nibbled to death by snubs a sensible and believable action? I don't think so.
Is a Corsair elder seething impotently on his burning flagship in a doomed last stand against a hopelessly large Outcast fleet flying into the sun to avoid the ultimate insult of being captured alive a sensible and believable action? Definitely more than the first one.
