I thought that was a great finale. It proved most of my theories that I have posted before. Its apparent now that the Jacob from before wasn't even Jacob, at least when the cabin is concerned. If you noticed, the actual Jacob was always the same guy, and gave no indication of being a tricky individual. I think that my egyptian theories are becoming more and more accurate. Not only was the temple covered in egytian heiroglyphics, that statue where the real jacob lives was the statue of Sobek.
This is where egyptian mythology really plays key roles in the plot of Lost!
Sobek is a god with the head of a crocodile and the body of a man. If anyone noticed, Jacob was weaving a tapistry with the Eye of Ra at the top and peaple worshipping him. Sobek is an avatar, a kind of reincarnation of Ra on earth. His main job is to fix the evil things that have been done. He doesn't get directly involved, but he tends to nudge things or set things in motion.
This is what Jacob was doing all through the castaways lives, giving then nudges to bring them to that moment.
This means that probably that nameless bad guy, New John Locke, is probably Set, God of Chaos, Darkness (smoke monster? monster told Ben to do whatever John said).
Of course, Jacob could be horus, and Richard could be Sobek? Who knows, hopefully we'll get some answers this next season.