What do you expect the drop rate to be like? If the drop rate was the way you wanted it to be, nobody would have anything to do, because if you had all weapons you are hardly gonna want to do ifrit/moogle any more are you.
Took me a good 150+ runs on both for 7/7. If the drop rate was the way you people keep moaning about the way you want it, i would of had nothing to do untill the next patch was out. The drop rate is fine, leave it be.