Hahaha. That would be hilarious.
I have Blade Runner on Blu Ray and it's a great film, but I really hope he does this film right. I would rather Deckard not even be a character in the film. A prequel or a sequel, either could be okay. But it shouldn't even address any of the questions from the first film (Is Deckard a replicant or not? etc.) and should be set in the same universe but at a different time and with different characters. And it certainly shouldn't be called "Blade Runner 2."
Since most of Scott's films have been excellent, I expect that it could be pretty good with him directing, but who knows?