The original poster suggested that Lana's character was ruined by her crappy exit from the show. I think that's immaterial compared to her crappy entrance and crappy sustained presence as the 2nd most obnoxious character in TV history. Oddly enough, #1 most obnoxious is Kara "Starbuck" Thrace, another character with a tacked on "special destiny."
"Kara Thrace & her special destiny. Sounds like the name of a punk band."