You wrote about the lamp in the room at the base and I sat and thought and thought... The only thing that came to mind was that it preparing for a voluntary NTS from Fujino. Kirito enters the game, if the lamp is on, then Asuna is having sex with Inoda somewhere on the base. And the player has a choice to go watch/talk to Asuna during her sex with Inoda, or not to go. The lamp was not lit in this update, because what Kirito heard was a hallucination, not real sex. It's a weak argument, but I can't think of anything else.