Originally Posted by
SinAscendant
He actually was pretty well written in Cata. He showed genuine contrition for the thing with Cairne, he executed Kromcrush for killing civilians and innocents, and with Sylvanas, to be fair they had literally just had the son of one of their greatest heroes killed and turned by Arthas directly due to Putress, so it's natural to suspect that Sylvanas might have had a hand in something her head alchemist did.
They did a total 180 with him once Mists started. Like completely rewrote his character. It sucked. Up until that point, he was getting better, he was becoming a well balanced character, etc etc. It's pretty obvious that either some of the writing staff changed or they just had a last minute "shit who's gonna be the last boss" moment and had to rewrite things to fit, Mists is pretty much the epitome of "let's shove whatever we have in there because we can't think of anything actually good"