4/5, they have work ahead of them. They need to make the game look more "used." As stated above, the tombs weren't constructed yesterday, they should be in horrendous disarray and disrepair. Shiny doesn't make things better. They need to remember this isn't WoW, this is Diablo, an adult game.
The only improvement in gameplay (as released till now) is the destructable parts of the environment, which opens a whole new world of possibilities when fighting bosses. But i would still buy a collectors edition.
Get real, folks, the diablo you all knew is dead, a few years ago i said right here in this forum that D3 had a pretty good chance of being blizzard first bust (i was flamed to death ofc), and what you know, its not even beta and its already looking that way.