You know, I've been trying to play MWLL, but I couldn't get it to install right. I'll have to try it again.
Hawken is more of an FPS thing, and more fast-paced, so I'm pretty excited about it.
MW3 felt really stompy, this one I'm not so sure. The missiles looked pretty weak in that trailer (like, looked weak, I don't know how much DPS they do), and again the lack of scale (besides some trees and small rocks?) really threw me. Plus it looks like the mechs don't have much "mass" but I won't know for sure until I play it.