It's been confirmed that they are making 4 or 5, i forget, games based on the 13 realm but only 2 will have the actual Final Fantasy 13 name, the rest are like spin off games, and of course the DLC
Honestly I can see another series popping up even if it does manage to conclude with this manga arc. Side stories, or other ways that they will continue the bleach universe.
I don't really mind watching it either way, but mostly I watch the original as it turns out to be a lot better. I have found that there are some dubs that I prefer the voices rather then the original subs.
even if they made a second season, it wouldnt do the manga justice with how much work was put into it and the depth of the story. Expecially after they keeps some key details out of the first season.