After looking through some campaign sources for LFR, I came to realize that the regions in that world gave small perks and bonuses, mixed up amongst the various regions.
So I was wondering if you'd be willing to allow a similar effect with the various regions in Auris. Just throwing the idea out there, but here are a few of the small perks from the difference regions in LFR for example.
Aglarond: Add Elven to list of languages known, Perception to your list of skill choices, and a +1 bonus to all Perception checks.
Akanul: You gain resist 2 cold, resist 2 fire, and resist 2 thunder (or your existing resistance to these damage types increases by 2). At 11th level, these values improve to resist 3 (or increase by 3), and at 21st level, they improve to resist 5 (or increase by 5).
Baldur's Gate: You know one additional language of your choice, you add the Streetwise skill to your class skill list, and you gain a +2 bonus to Streetwise checks.
And so on and so on... You can find the complete list here:
http://www.piratesoftheplains.ca/lfr/lfr_main.htmLet me know what you think, Josh.
~Ben