The only way that I would support a remake would be if we got to see JMS' original plot line (sans cast changes) put on screen.
Otherwise there is no point. The reason that BSG really worked was that it took the original premise of the old TV show far more seriously than the old show ever could. In essense it lived up to the potential that was originally missing. B5, on the other hand, largely did what it set out to do. Not only that, it managed to do so while being incredibly literate and nuanced in its storytelling/imagery. Plus B5, while having some questionable acting, mostly from Michael Ohare and Bruce Boxleitner, the rest of the cast was SUPERB. I do not think that anyone could replace Mira Furlan, Peter Jurassik, Andreas Katsulas and Jerry Doyle. Andreas Katsulas alone could never be replaced.