I've been loving MK since the beginning, so I gave it a rent. And that's all it seems to be worth. The Story Mode is really well-done (pwns SC4's) and I think anyone who loves fighting games, MK, or DC should experience it. But that's really all there is to this game. Play each Story Mode once (and probably never again), then go play Versus/Online for a little bit. Then get bored when you see there's not much going on gameplay wise. Learn your char's longest combo, and repeat it. Same as the rest of the other 3D MKs. Sidestepping downgraded for some reason, so defense is even more cumbersome than before.
My main disappointment is that in an interview a while back after Armageddon, Boon said for the next MK, their plan was to scrape everything and do it from scratch. That's what MK needed and I was really looking forward to that. But clearly that did not happen as the engine here is just a minor edit of the DA/Deception/Armageddon engine.
Oh well. Hopefully next time.