I thought that was utterly dire, personally. I loved most of the episodes leading up to it - except for one, if I remember right - but I was on the brink of turning it off half way through. Great build up in the episode before, but terrible resolution once again. But I had a feeling going into it I'd be disappointed. Moffat has never impressed me as a finale writer. He seems to enjoy building it up so large, but it always falls apart. For me, anyway.
In this instance it was a lot of nothing. A lot of standing around and talking about the panic, but nothing came of it and there were no real consequences. If anything, it felt like a dull set up of the next series - whenever that may be - but lacked any oomph it could have had.
At this point, I wish Moffat would stop writing the finales, because he isn't getting any better at them. I enjoy what comes before, but the ends are just incredibly flat.