On one hand I'm very excited to try sub now that I don't have to sacrifice mobility for prep. I found on every fight the lack of shadow step was just too big of a loss for the spec, regardless of how enjoyable I found it.
On the other hand I really am disappointed with where combat seems to be going. I enjoyed that it was a niche spec. While I'd love to be able to play it on more than just cleave fights, there hasn't been enough given to make up for it's low dps on non-cleave fights. I would be kind of sad if the next patch relegated combat to a dead spec.