I can't imagine the staff of TVD and TO writing a proper redemption arc for Klaus. In fact, I find it pretty unbelievable that a 1000 year old character would change so completely for the love of a teenage girl especially in the short time from that will be covered by the TV shows.

From a pure entertainment point of view, not social message standpoint, I think it would be a train wreck to watch Klaus' redemption.

And the baby storyline seems an unlikely redemption path too...