Interestingly, Cryptic's previous game (Star Trek Online) is about the only one that is that I know of that's still running, and it does scale to my knowledge. And CoH was their work originally too, so.
Just seems there's a lot added up to say they should do it, is all. Whether they will is entirely another matter, I wouldn't be at all surprised to find out it's exactly the same WoW clone almost every other fantasy game is these days.