Though I'd be annoyed if at least some of it isn't patched into BG, I still think it's a step in the right direction. Maybe enough time has passed since that survey about depth for the devs to start actually adding them to the game. Hopefully we'll see a lot of improvement of sims' personalities, memories and relationships. And even if this is the only type of memory system we'll be getting for a while, it will still lay the foundation for later improvement.
They did mention graveyards, so maybe we'll be getting improved death, mourning and the lot type. And I think platforms will be patched into BG, so there's another highly requested feature. It seems promising.
