Honestly my problem is that all my designs turn into devboards since I always have a kind of "FOMO" of not breaking something out and then needing it later to bodge things... and then I'm left with a crowded board where I don't even use two thirds of things...

This is a really excellent tutorial, thank you for making it.

I thought this article would first start with the most essential question: "How to decide what you need on your devboard".

Without that critical piece of design work, you may as well call this "How to build a Raspberry Pi Nano from scratch". Which, to be fair, is also a good article to write.

But step 1 for really building a dev board is answering the question, "What do I need from this that I can't get from a $5 Amazon purchase?"