I've been reading that in the new show, all the original members of Team Avatar are dead. Now Aang is a given, since Korra is the new avatar. But I think that Toph should be alive at least, I mean, think about it: King Bumi was still alive at 112 and still in good shape, and Avatar Kyoshi died 230 years of age. So it is entirely possible that earth benders can live longer than most people. And Toph would only be about 77 so she would be a cranky old woman but she could be an aly of Korra. It's like Roku said "Some friendships are so strong, the can trandsend lifetimes." Just saying.