I love the attention to detail on just small facets of the game. Like catching butterflies. It's a mundane task but it feels so much like i'm actually out in a field catching butterflies I dont care.
The amount of factions and guilds you can join. Different types of characters you can become. I can join the brotherhood or even become a bard. The amount of custimization you can do with your character. Most games just have set classes. This is due to the levelling system, but you really can create an infinite amount of characters.
I actually love the streamlined approach and the fact this game incorporated an epic feel and storyline and still kept a ton of depth with the amount of choices you can make, professions you can explore etc.

