Sam Raimi surprised me with his work in Spider Man, and I'm sure he'll pleasantly surprise some of the naysayers with World of Warcraft. He managed to keep his Evil Deadness to a minimum in Spider Man (except maybe for the final fight scene camera work in the first Spidey). I loved Evil Dead but this must be bigger than that.
I think you all have to remember, though, that the most important thing is that there should be little to no comedy. Please, God, nothing like the Dungeons and Dragons movie. No cute sidekicks. No crappy comedians as a rogue. Keep the gnome jokes to a minimum. Don't water it down. Don't wink at the crowd.