*Are we thinking new suitors for S3 or hoping for the return of one?
I think all new for me!*
I think cast interviews make it pretty obvious who will get married at the end of S3. But that doesn't mean someone new won't show an interest in somebody, even if it comes to naught.
Personally I don't want too many new characters or storylines. They've had to ram a lot into S2 already. I'd be more than happy if they dealt with Edward in particular as quickly as possible.