I liked Misty as well, but out of the three current female leads, she was the one I like the least. She got better when she started keeping better control of her temper.
Stupidest Pokemon award goes to, at least IMO, Misty's Psyduck (which in reality Misty would have gotten in so much trouble for treating Psyduck the way she did, Animal Rights much?). The only way he got anything right was to get headaches. No other Pokemon in history has that problem. A close second might be Ash's Gible...I understand in the series moves aren't learned right off the bat, but hitting Piplup everytime, plus the almost hit on Kenney. I personally like Piplup, and don't see the reason for the hate. Though I admit it does act pretty spoiled at times.
It will be interesting to see what Iris is like though.