If there's voice acting in it, I hope they use more than 3 actors lol. I noticed that a lot of the characters in Oblivion began to sound painfully obvious to each other, which meant more that one guy recorded the voice for many characters (without bothering to change his pitch or tone to make it sound like a different person), which made me lose some of my "suspension of belief" a little.
On a serious note though, I hope the storyline's good. Nothing makes me lose interest in a game more than the fact that the plot that doesn't seem like it's well done (gameplay could help, but there's only so many times you can kill an orc with a sword, a bow, or a fireball in a game like this before it starts to get repetitive).
I liked Oblivion because of the sheer size and number of quests that could be done in it. I got so sidetracked doing the mini-quests that I forgot to save the world for a long time.
Jam it back in, in the dark.