Btw, can anyone tell me your success rates on the Diadem loot? My chances with the 150 stuff were always 100% at 180 dSkill so I can't get data there, and I haven't actually gotten an i210 item I could desynth yet (I don't really run stuff). But, I checked my desynth chance on an i180 LTW-desynthable chestpiece from the Diadem that I happened to have, and it was 75.00% at 180 dSkill. I expected 50%. The only way it would be 75.00% is if it was r180 with a 50% bonus (what I've been calling {W}=15 in my equations), or if it behaved as if it had 5 materia in it. It did have five stats on it, but I have no idea if that matters. Both makes sense to me though - aetherial items having a flat 50% boost to desynth, and aetherial items acting as if they have materia already melded into them.

I never paid attention to aetherial melding rates before. Until now, aetherial equipment was all so low level that there were significantly easier ways to blaze past them.