FINAL FRONTIERWhen Iron Maiden's classic lineup famously reunited in the year 2000, their first new album, the quite excellent Brave New World, neatly reconnected both musicians and fans with the band's heritage, while simultaneously promising a prosperous future still to come. However, their next two efforts didn't fare quite as well, and whether Maiden was choosing to repeat the same moves without as much imagination or consistency on 2003's Dance of Death, or