I'm strongly expecting for it to turn out that Amon is neither scarred nor a nonbender (especially the first part)--though I'd actually love it if they were like "I KNOW WHO YOU ARE!! YOU'RE [X CHARACTER]" and he takes off his mask and actually he's just a scarred guy you dicks. We'll see.

I have the same reservations and the same kind of cautious "hmm! I think this will go good places but...what if it...doesn't" as you, overall, though!