I was 100% trying to emulate the feel of chapters in the Trails games, but overall I think it's a pretty decent way to do prep -- though as you say, more for a newer GM than for a more experienced one, who probably won't need so much structure. As long as you don't get too rigidly locked in, it's a pretty good way to think about "Okay, here's something this person wants, and why it's something they can't just do themselves." ;)
Thanks for your kind words, and hope you are enjoying the game!