I believe JoJo will not be treated as a long-runner but a serial. It will take a break after Part 2, but Part 3 will eventually air on Toonami--
--UNLESS it gets relegated to 2 AM when Tokyo Ghoul hits, as that would most likely indicate they've given up on it. Granted it almost always drops the ball from DBZ KFC, but I believe when we get to what JoJo is KNOWN for, part 3 and beyond, it will do much better.