I would like to play as Revan again, but I doubt it will happen.
As has been said before, a redeemed Sith would be neat but in all honesty that is exactly what Revan was. Someone who lost connection and getting it back would be Exile. All I can really think of is someone who is actually learning the Force for the first time, a smuggler or civilian maybe. Maybe someone who lost family to Revan and wants revenge.