Unfortunately, the genre is a double-edged sword with active development, especially because I cannot add objectives like "That's all for now" to quests because they will be hard-coded into saves, and future changes won't reflect on them.
You more or less got to the end except for Fia, which will come naturally from gameplay, not a story element.
If you come up to a "Not yet" wall it is safe to assume that quests around that area are not done yet, unless stated to be in a location already finished. I try adding descriptive quests where if it doesn't sound doable right now, it probably isn't.