Lobelia's a fantastic character, I love sympathetic portrayals of her that don't sugarcoat OR dehumanize (dehobbitize?) her.

Sympathetic Arwen and Galadriel fic IS out there, I've seen it! I can't give out exact pointers right now, though. :/ It's been a while since I read LotR fic that wasn't something fresh that a friend wrote.

There's also a lot of potential with young Arwen fic. You never see kidfic with elves, do you? Or is it just because I haven't looked?