You guys pretty much sum up what I feel. I'm not concerned, at all, about the technical aspects of the game. RED are pretty beast in that regard. I believe our bros at RED got that shit down.
Now as for the content. Aha - this is where I'm sceptical! I mean, like Wazhai said, TW1 was about 45 hours long while TW2 was 35 hours long. IE, the sequel was shorter. Now, RED claims that TW3 is gonna be TWICE the size of TW1. That's an enormous leap! Going from TW2 to TW3 seems to be incredibly ambitious and borderline insane! Now of course, it IS entirely possible, hell I still haven't finished Skyrim. So it's definitely doable. But damn, ensuring that those 100 hours are QUALITY content, that's where I'm a bit critical and doubtful. I mean I love TW1 but some of those quests were just needless padding and the game really felt like an MMO. Some things you had to do were a bit cryptic and grindy. Not a lot of fun to play through.
So yeah, I don't know. I mean Skyrim is a long game, but the quality isn't necessarily up to par (in fact I'd argue that most quests are really poorly done). Not only are many quests subpar, but the combat is absolutely atrocious, voice acting shit and the way they present their lore is a bit uninspiring and kinda lazy. So basically, RED has to create a bigger world than Skyrim AND have everything that Skyrim didn't. Whoah. Just thinking about it, RED has got some enormous balls to even consider taking on a open world game. I don't know. I'm hoping the content in TW3 is awesome. I hope the quests are engaging, the voice acting superb, the presentation top notch and the script as amazing as their previous games. But man they sure do like to push themselves to the limit!