Oh you are not almost done. There are another 20 something episodes after these. Netflix doesnt carry them atm though. Funimation and Crunchroll do though. 25 episodes in the Alicization Arc, 23 (i think) in the War of the Underworld Arc.
Huh, i had noticed that they changed the OP at this point, but i had never really PAID ATTENTION to it. There is some cool stuff in there.
One of the things i had never really thought about are how much the GAME aspects of the Underworld affected its society, without most the people even knowing. If you think back to the story of Administrator, she was a child learning the sacred arts, and she learned how to use them to kill. Then she went out and killed an animal with them. What did she notice? She noticed that killing the animal LEVELED HER UP. So she started grinding levels. Then when she came to power she added HUNTING to the Taboo Index, making it impossible for anyone else to go grind levels. But one advantage Kirito has, is he knows what a GAME is...and will pay attention to and notice anything that increases his levels.