It seems most of the new spells are lvl 71+ as are most of the AA's. I could be wrong, I am sure a follow up post from another will confirm. I have tried to be more possive lately, but honestly I don't think this expansion would warrent getting back into the game. The new mobs are all pretty much underconned. Trash mobs in the lvl 30's are summoning, rampaging, hitting for more damage then they should, etc etc. There are however some decent quests you can do, however I found them to be a pain since the quest mobs are difficult to find (and usualyl rank in there witht he underconned stuff I spoke of earlier. Also rumors are floating around that Fake Death type spells do not work in the newer zones on a number of the new mobs. I have found this to be true, however not sure if its just a bug or a new skill mobs have.
The new race basically ranks in there with a funny looking human. Stat wise they are about the same as a Human and they have the same available classes that a human has. I understand they do have some Drakkin only quests that gives them weapons with a dragon like proc, but I don't know much about that.
The increased regen lets you regen health/mana/endurance at a really fast rate aftr you have been out of combat for 30 seconds (or 5 minutes while raiding). The thing this does to hurt a necro is it makes them no longer one of the few classes that can solo.
I don't know what you mean by the new zones being worthwhile? IMO because the new mobs are so freakin underconned and have poor loot Id rather level up in a hotzone myself. I ran around several of the new SS zones hunting down named etc and all I ever got for loot was no trade quest items. When I did do a quest the reward was no trade and had very strict required and recommended levels on it (to the point almost making it worthless to even own). If you are a true newbie (well as in starting for scratch in this case) I imagine you could get some nice rewards for your level completeing the newb quests in the new expansion. However for those of us withlvl 60+ mains twinking a toon its mostly junk no trade stuff.
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Hi