It took me 6 months to write The Cha'alt Experience: Designing Worlds Like A Fucking Boss, and nearly 6 years to go from the idea of creating my own world to running over 100 one-shot sessions and 2 campaigns. Cha'alt has evolved slowly but surely, and hopefully the wisdom and tools and suggestions in this book will grow whatever campaign setting you choose.
RPG Pundit wrote the foreword, and it's definitely something special...
https://legacy.drivethrurpg.com/product/480424/The-Chaalt-Experience-Designing-Worlds-Like-A-Fucking-Boss
If you have any questions about it, let me know. Tremendous artwork (none of it A.I.) included, as well as, one of my favorite Cha'alt adventures at the end.
Thanks for checking it out,
VS
I'm not all the way through it yet but I really like it so far. I don't think I build worlds like you, but I've already seen some tips I can use.