I created an account to answer this question. Let's see...
No fast traveling, competing guilds, vampire clans, more lore, better combat, werewolves, horseback combat, more creatures (I shouldn't be finding deer in the Jeralls if the same type of deer was also in Blackwood), more and better voice actors, longer storyline, more weapon types (broadswords, wakizashis, tantos, more sabers/cutlasses, spears and halberds, etc.), levitation, ridiculously powerful spells, short combat (A level 38 stealth fighter shouldn't lose almost all of his health in a fight with one minotaur that lasts 40 or 50+ sword slashes), more durable weapons and armor, better marksman, better stealth, more area variety, MORE RPG!!!