You nailed my thoughts on Gwen perfectly. I wouldn't really have a problem with 1, 2, or 3 to be honest, if the characterisation didn't seem so confused an awful lot of the time.

On another note, I'm also a bit twitchy about Gawain in general cause I love him in the original legends. However, certain events in the legends (I never know what's considered spoilery when there are so many different canons) mean I'd love love love to see a well handled friendship between Gwen and Gawain.

/nerd