I really have to take my hat off to Bethesda. Blackreach alone didn't change my mind, but going there allowed me to realize of how vast the game is, it made me see how every mountain is difference from the other. I can live with hearing NPCs say always one of the same 2 things, with Guild members treating their leader like crap, with the fact that there's a dragon skeleton breakdancing in front of the Dark Brotherhood sanctuary (that's actually a bug I can very much live with ^^) because I realize the game is bigger than I can see. It's the difference between being in a large field and being in a field so large you don't even have an idea of how far it goes.