Another thing. Fix some of those damn quest bugs. For some of us who have played Skyrim out and can't be arsed to delve back in for another 30-50 hours just to get those quests and achievements, that Oghma Infinium exploit is looking mighty tempting just to say "screw you Bethesda" for taking your merry time.
So I drop down, talk to Nocturnal, talk to Karliah...
"Yes fellow Nightingale?"
FFFFFFFFFFFFFFFFFFFfwaaaaahhhh... aaaaghhh! They can make the bloody door open again to allow access past the entrance when re-entering, but they can't script Karliah to be forced to give the dialogue to choose an "Agent" after you finish talking to Nocturnal, instead you get the same old crap she repeats after doing Hard Answers twice...