Well, we owned up on Diabolos pretty well with this setup:
NIN (me)
WAR (Blagoce)
SAM (Sylvester... Sammy... ???)
DRK (Peacefulsoul)
RDM (Rustan)
WHM (Goodhobbit)
Everything pretty much went according to plan. Stun order was SAM > DRK > WAR > NIN. He used Nightmare about 3 or 4 times, and each person did their job in stopping it. On the last Nightmare, I was the only one with TP (Flat Blade) and got him. Had a little trouble holding hate, but was able to get it back using NI nukes. The sam almost fell off the platform when they dropped, but otherwise we were good.
Then, we went after Ouryu. Got ugly. We had 3x BLM, SMN, WAR, DRK (same people, changed jobs). Plan basically was dispel, sleep, 3x freeze, sleep... well that backfired when 1 BLM didnt have the MP for the 2nd round and when the SMN went to BP 2hr, the avatar wouldnt go away and woke up the boss again. Also, we had nobody to silence his stonega 2... more ouch.
So, next week: PLD BLM BLM BLM RDM BRD ftw.
To the ppl wanting to jump in later on: we'll see. This may turn out to be a set, assuming we have ther versatility of jobs. We're going for Ouryu again this Friday. People have jobs to level up to 50 and the rest of us will be farming more tailfeathers.