I like the idea, if it's done right, but I've realised I just don't really enjoy big open world epics. The Witcher bored me and I found niggly flaws everywhere. Skyrim was the same when I played on PS3. The "story" elements (characters, dialogue) in Skyrim felt awful to me. Terrible character names that felt like parodies of ye Lorde of the Rings kinds of names. A load of rubbish I didn't care about told to me while I had to follow people around. I literally had no clue what was really going on, it was just a way point fest of go here, do this, do that wrapped up in seemingly impenetrable back story and lore.
At least The Witcher has some great cut scenes and a deliberately well told story. Skyrim was so disappointing on this. I roamed aimlessly, got attacked by wolves randomly about every 3 minutes of exploring (the only reason I ever want to play these games!). Most fun I had was when I was exploring a deep cave system at 2 in the morning with my headphones on and I could hear an ominous sounding troll or something deep within, and as I was tenderly making my way around it my girlfriend scared the fuck out of me! That was my fun with Skyrim!
This would have to be special to get me to consider it. I did love the atmosphere in the world but gameplay wise I never made it far in at all, so non plussed I was with the rest of it.