It's good that Ridley is involved in this.

Interesting. If Scott wasn't at the helm I'd obviously have big reservations, but he is..so that's that! Bring it on I say.

As long as they don't continue Deckard's story I'm down with this. They should tell a different story set in the same universe. That's all.

I agree with nonservian03

A lot of people were dissapointed with Bladerunner, the first time around, because it looks so cyberpunk and hi-octane and yet has a thoughtfully smooth pacing and reads like an arthouse flick. Also a few people were upset that it didn't conform to the more Mad Max stylings of Do Androids Drean of Electric Sheep. It wasn't that succesful, either. Somewhere down the line it went from being a cult film to being a classic.
This is why I'm not too concerned about the initial reactions to Prometheus not being too positive. It might not be entirely successful. But I'm pretty confident that it will be perfect, in all the ways it should be.
Making a sequel to Bladerunner, at first, sounded sacreligious. Like Sequeling Citizen Kane. But, I was contemplating, when I watched the film only yesterday, how a sequel might play out and I realised that it would only work if it had absolutely nothing to do with the originals plot. To revisit Dekkard and Rachaeol and find out whether or not they had a good life together, would undo not only the ambiguity of their life-span/s but the ending of the Director's Cut.
So this, along with the fact that Ridley will direct, is reassuring. Without Ridley, it would indeed be sacreligious.

So the villain will be a female huh..... We need more info to have an opinion.