I would love, love love it if WoW was set up more like the Sims in some ways. I mean... if the characters can clobber and kill each other, why can't they hug each other for "real?" Why can't the food look like the actual food they're eating? I know it's possible, it's just Blizzard didn't put those little details in... yet. I still have hope for it... and for more hairstyles. :)
And my dream? I think it came about because for the first time I was shocked back to life with the gnomish army knife by a guildmate who is an engineer. Way cool. Still... the Grim Reaper showing up would be sort of awesome.