I agree that the pack could use some extra world gen structures would be awesome, yet as Munaus said it would be to much of a strain, as it already is for most people. You could probably include the Ruins mod, but have it so it doesn't have those uber big structures (like the flying castle one) somehow, but hey I'm not a mod creator so I don't know. And adding the twilight would again be awesome, but again be hard for most people to manage. I like the idea of finding new things in the world other than boring witch circles. Nice suggestion yet I doubt it would be possible