I'm pissed that they're eliminating twinking by putting level reqs on every unique. Ok, so the level 1 paladin I started last night had 125 life and 110 mana with 2 soj's, gull dagger, hotspur boots, tarnhelp, and nightsmoke, and at level 10, he had goldskin and hellplague (dual leech, 50 poison damage)--but what's the point of the non exploitive uniques if you have to be level 29 to use a shield that's built from the normal kit, like the Ward? They said they're going to improve crappy uniques, but I don't believe them. I'll still find Rixot's Xeen and the Tany'r Gorerod in every game.
Other things I don't like:
Necro's being screwed in the expansion: 50% physical resist means that it will take 5 hours for a monster to kill itself on your minions with Iron Maiden--minions whose health no longer scales with the players in the game. The new necro set looks like it sucks too--not giving any more +skills than a typical cookie cutter necro set in diablo 2 classic, plus, you lose frosties! On the otherhand, if people can't leach off of our minions and bonewalls in duels, that would be cool too--not to mention that they'll have to load up on poison resist for the first time as poison nova is going to be wild with people with fastest run gear just weave around the battlefield nova-ing 360 degrees of death. Then again, Teleport-kicking assassins are going to make life miserable for everyone besides barbs who can just go into a whirlwind.
The no gambling uniques is going to fritz over magic users too, and is guaranteeing that dupers and 13 year old geeks are going to be making a killing on eb@y selling off their stock piles of tarns and frosties (not to mention goblin toes and rattlecages now that crushing blow will work on bows, though at 1/2 effectiveness).