I will play this game as soon as it's out. No doubt about that, but I'm not so sure about all this. Voxels seem like a good idea, blow up the bridge to send a couple of goblins to their death. And then the bridge stays broken. Or after using a particularly powerful spell, you can fall through the earth in a new environment. Sounds nice, but there's no way damage can remain forever.
Anyway, I like some ideas (smart mobs who adapt to the heroes that attack them, a very good idea!), but not so sure about others.
It's still going to be a fairly long wait, no idea what's going to change till then. Visually and content like.