Alfred Gough and Miles Millar have regrets about Lana
Q: Looking back, is there anywhere you wish you’d taken the characters of Smallville?
AG: I wish we had a better trajectory for Lana Lang. That was probably a three-season love story that lasted six seasons.
MM: It’s so torturous and slow. Ultimately, it damaged Lana in the audience’s mind. Because Clark refused to tell her the truth about his identity, he >was constantly forced to lie to her. Although justified, Lana’s response to his behavior made her seem cold and unsympathetic — even though from ?her POV, Clark was a sneaky, bold-faced liar.
http://www.sundance.tv/series/the-writers-room/blog/2014/04/interview-with-smallville-creators-alfred-gough-and-miles-millar share