Well, looking at this from a S/K perspective, the release of Black Tessaiga will be a test, I think. Its fairly faithful to the manga arc, with extra sits, and there is a LOT of Sesshoumaru fanservice (oh man...a lot). The animation was just gorgeous, though, and it'd kick so much ass if the next anime series looks anything like it.

I'm trying to be positive; yeah, there's probably going to be an influx of fanbrats and teenyboppers and shippers again...but the second half of the manga has so many great arcs - Hell/SessMom, Kagura's death, Kikyo's death, Mt. Azuna, the bone youkai/strengthening Hiraikotsu, Bakusaiga, etc etc etc. I think it'll be worth the hassle, just to see those things - and for all these lazy ass fanfic writers to finally realize there's more to the story than where the anime left off the first time :P