Voted no. Out of the 25 threads on page 1 of the Final Fantasy section, only 3 are about FFXI trading. There are multiple threads on the first page that haven't been posted in in over a week. There are only 3 threads that have been posted in in the last 24 hours, and none of those have anything to do with FFXI trading.
I'm a big fan of the Final Fantasy series, but unless that number increases drastically there's no point. Where is this sudden need for its own section going to come from? Watch the Final Fantasy section, if it suddenly explodes with activity when FFXIV comes out then it might be worth considering.