Dozens of factions, dozens of towns, Rich diversity in weaponry, Fully customizable spells and magic items, hundreds of random quests ( npcs or gods not involved in factions)... HIDDEN factions like vampire clans ... Specific places where you can find epic loot and very hard monsters... 2 full expansions with new factions, lootz, mobs ETC
I believe ive proved my point
You guys mean story... but ive rarely bought a game for the story! If the story is good, great... if its not, then as long as the gameplay and world is rich.. i don't give a flying duck ( espescially when the story getz cheese... i luv a good cheese RPG Pizza)