@Midareyukki what other ancient civilization would you want to be explored? We keep on running into their tech and learning about them due to how well their stuff survived for over thousands of years. The three main nations of the Magi war have places you can still see and find remnants of. Any other great nation that doesn't exist anymore tend to not have much information about them that have survived since the era they existed in. Part of that is due to three old dudes who were bitter wrecking those places up. The other is due to how some of the ages played out. Like if how the rulers of an age didn't want the average person to know how to read and write or what little we know about the fourth Astral Era is from oral tradition. Who knows how accurate anything we know from that era is. Other places we could explore more about I feel they'll want to explore with variant dungeons if this first one is anything to go by.