I have friends who get together for table top gaming nearly every weekend. They almost always have one, sometimes two, phone players sitting nearby propped up on a screen facing the board/table. I'm sure it's not ideal but it's there. There's plenty of functioning multi-user video chats out there (Google hangout, stickcam)... just do the same thing with a game.
I know it can't replace it but that doesn't mean that it shouldn't be done.