In terms of cultural biases and bigotry and diversity, I think you did fine with Elfaivar and the Akela Sathi; you present facts and situations, solutions people have created to resolved problems, and a person (Kasvarina) with an attitude regarding them- and left it to the GM and the table to work out who is 'right', what solution is best, what sacrifices must be made and by who. My group found it quite enjoyable to read through Book 8 and initially assume we were dealing with a heavy-handed and crude 'elf slave brothel', as condemned by Kasvarina, only to read closer and discover there were subtleties, justifications, provisions for the consent of the Saplings and the like. It provoked a rather nice sub-plot about Elfaivaran society, looking into family structures and the pain of the Great Malice, and has nicely set-up meeting Srasama and the matriarchs in Book 12.
In terms of Elfaivar as a whole, I think it could simply benefit from a few more editing passes- as well as more synchronicity between the Player's Guide and Book 8. Some facts are contradictory, some simply never made it into the AP, some were never carried over from the Player's Guide.
My party has enjoyed Elfaivar so much that come Book 12, I wrote up a
whole bunch of prose sections for the souls of the Eladrin women lost in the Malice.
(Apologies, Crispy, if we have derailed your thread.)