Heck, all that we need to happen now is for someone like Peter Jackson to direct an episode of Doctor Who...
There actually is a very slight chance that could happen someday. Jackson has said repeatedly that he would love to direct an episode, but they just haven't been able to work things out.
As for B7 sadly I've never seen it. I've been searching for it for years, but it's not on DVD or streaming anywhere.
I am curious about the new version though. I've been pretty happy with most of Syfy's stuff that I've seen, and the story does seem interesting.