Don't you think they should make a section for ac rather than just the one thread cos the one they have is too long and ppl don'teven talk about a anymore

At the moment there really isn't that mucht o discuss about Advent Children, only a bunch of rumours, theories ("I think the man in the wheelchair is Sephiroth" - "No, Rufus!" - "No, Aeris!" - "Are those people clones of Sephiroth?" - "Will Tifa show up?" - "I think they'll revive Aeris!" etc)... Not really worth a subforum, and not even worth several threads.
At the moment, one thread is enough. Once the thing is released, this will probably change, it's likely that then there'll be a FFAC subforum, but if we did this at the moment - actually, even if we just allowed mutiple threads - it'd end up with dozens of thread containing more or less the same theories, speculations and questions over and over again.
Trust me. Been there, done that.
Maybe later.