Ok, well, one of the producers was asked directly about Chlark and although he didn't completely dismiss the possibility, he compared it to that episode of MASH where Hawkeye and Margaret Houlihan are trapped under fire and they end up kissing (but nothing ever comes of it, being the subtext). Also in that interview, btw, was the exciting news that the rise of villain!Lex is going to be a major theme of next season, and they're going to explore the corruption of the good through the Lexana and Mionel relationships.