I have two accounts: one for a good lion and the other for a bad lion. I find that I get rather bored leveling my second account at the same exploring area I'd been playing in for ages. I think it'd be kind of neat if there were karma-specific areas, unlocked when you reach a certain level in good and bad, with a basic area for neutral lions as well!

For the good area, it could be a big flower/butterfly field, featuring light-colored NCLs.

For the bad area, it could be a rather wasteland-ish area, like an elephant graveyard, with dark-colored NCLS.

the neutral area would probably be some kind of grassy cliff area, like a gorge. Medium-colored NCLS.

The good and bad area would possibly be guarded by npc lions, almost like two factions.