Unless Magi sells like hotcakes, a full fledged long running Magi animoo will never happen.
A shame, because Magi is probably the only shounen I'd want a long running series of, and it'd be perfect for it too. Very adventurous, constantly shifts view points, aside from Alibaba and co with Al Sarmen being black and white almost every other group of people are shades of gray. The large amount of subplots really benefit too.
Maybe the fujoshi can make it happen. Fujoshi STRONG.