As I said in the other thread, there's 400 odd people working on FF15 not even counting contractors according to Tabata; teams are fluid and not rigid. Most of the grunts from FF12 ended up working on FF13, and the others were shuffled into FF14, mobile projects or Crystal Chronicles on Wii (who then later on still got re-shuffled into either FF14, portable or mobile efforts). The Divisions are lines that are formed/used when games are in development, but people really move around and the divisions in a practical sense more or less disband once their title is done, the people put on other things. The only people whose jobs are really 'absolute' are the big names like Kitase, Nomura, Ito etc.