We're back to the resources thing I see
- I think the main reason most people prefer (admire) the other systems, is because it is not so rigid - I think if we would have gotten a SoB type of passive we'd be quite so close to ret, their HoPo is basically our SF.
It would also be much more fun, since it will change how we play depending on how much haste we have, end of expansion won't be the same as the beginning. And on top of that we would ( in a perfect world ) have to ways to choose from; Hard hitting -> Mastery, Fast(er) paced -> Haste, it won't happen since MoP is right around the corner, but one can dream.