This sounds interesting for quick prototypes, but tbh it doesn't map onto how most iterative layout processes actually work. At least in my experience. $0.02

However, I wanted to say that for a lot of common parts I find the Adafruit open source schematics to be at least as useful as the application layout suggestions in many datasheets. When it comes to regulators etc it's nice to see how they did it, because like your project, you really can approach it like a block.