I wouldn't call her "ugly" ugly, but I can see why she may not be some people's cup of tea. She also seems like a nice girl. I don't like her ring announcing, though.
Justin Roberts is a guy to watch out for. He's got a great voice, he's young, can announce REALLY well, and he has a good passion for wrestling (apparently he trained to be a referee just so he could be on the road with Curt Hennig back in the day). Next to Fink, he is the man.
Tony Chimmel isn't that bad. I wouldn't say he's great, but I don't think he's a stain on ring announcing, or anything. If they can find someone better, I wouldn't lose any sleep if he was replaced, though.
Howard Finkel and Justin Roberts are definitely the better half of WWE ring announcing, though.