Sadly probably never gonna happen. The season's that they didn't dub were to dark and serious anyways and a lot of people would be mad because the Dub would ruin them.
Hope Z-one and Fujiwara get added to Duel Links at some point. Z-one's English VA never got to voice his best scenes, and Fujiwara has yet to get an English voice. Getting them both would be really cool. (but I hope they wouldn't change Fujiwara's name)
Wait, @Rin Matsuoka how far did you get? Antinomy (or Vizor) appears at the beginning of season 2 and tells Yusei about a new way of duel that can defeat the Meklords, the Accel Synchro Just later we discover his real identity...