Are they going to follow the plotline of the original (which I never saw so it makes no difference to me)? Or just start with the characters and premise and then do their own thing?
As for releasing the original series on DVD, my hunch is they won't. Producing and malling DVDs costs Netflix more than streaming them, so they have a motive to discourage DVD-only subscriptions. And yes I know it's their own fault if people still get DVDs, like I do, because their streaming library continues in its general suckitude.