I'm not going to say much because I didn't try the beta, but if the melee (warriors I can't speak for rogues) are having trouble that means they are playing wrong. I bet if they released that data you would see people standing in crap that's not even much of a dps loss to avoid. Banging the keys harder and ignoring the fact the fight is going to be longer isn't going to work well. Also what consumes were they using? Even if you give people a potion/item that doesn't mean they will use them right (i.e. prepotting resist potions so you can use another during the fight and using multiple rank lock health stones). Seems small but if you go in with mindset you are going to magically do double damage ... that's not the class that's the player.