Yes, we're in agreement regarding Cordelia. Actually, I think the writers went off the rails with her character even as early as season 2, where her arc is pretty much stagnant (BTW, I did read some interesting meta about the Cordy situation...)
/Illyria, she become one of my favourite Ats characters ever/ - Because llyria is just so awesome! *_* Though we have to agree to disagree regarding Wesley... ;)