although i havent finished coil, i do agree if compared to WoW end game raid, FF doesnt have much end game raid content... only 4 bosses? and 3 same bosses that you have beaten twice now
FF should have a lot content, they have a lot of material to do this.. FF1-FFX alone is enough material

i wish they make a raid like the black temple, karazhan or w/e most of wow raid are interesting anyway