I always see new stuff. I had to do a short stint of testing here when production was done, just doing some bug squashing and fixing, but there is a world of data in there that I have never seen. The stuff I have never seen staggers me since there is so much to do and see. Ya, I may work on it for 2+ years, but it's always a pretty fresh experience when I actually get a chance to 1-on-1 with it on my own time.
Really looking forward to the PC modders to go to town on it. I am sure they are dying for the editor release.