I question the logic that a character isn't a hero because he doesn't want to join the Alliance to Restore the Republic. One could legitimately say that restoring a model of galactic governance that eventually fell into corruption and self-service may not be the best course for the civilized galaxy.
Regardless, really push this player to explain why a Grey Jedi is the role he wants to take. Being a self-serving a-hole rarely works out well in a game that requires cooperative action among all players. Just like in life!

