I don't want to have to add everyone I meet to my friend's list to have any chance of rejoining a crew I disconnected from. Plus sometimes I just forget to and lose a lot of progress. And finally some times I just want to restart my client.
There needs to be a simple grace period, when a player disconnects from a crew or closes their game. Simply a button you can press when you start the game back up to rejoin your last crew..
edit: maybe this should be tied to the ship, because solo players might feel especially oppressed when their client inexplicably crashes or windows demands the computer be restarted and they lose all their progress and loot.