Allow me to be the voice of reason....

This is a terrible idea. The very fact that WordPress has a built-in code editor is a terrible idea. People posting saying that we should do things to benefit "Cowboy Coders" are wrong. People approvingly saying they like "Cowboy Coding" and could benefit from that feature are dumb.

WordPress needs to be moving in exactly the opposite direction. Make it EASIER to be smart. HARDER to be stupid. Simple to use does not have to equal simple to be stupid. WordPress should encourage separation of concerns, a security-first mindset, and use of version control.

People who don't know how to write code don't care if those things exist. But they'll benefit behind the scenes. People who do know how to write code will be encouraged and incentivized to develop for a platform that is in bad need of good developers. And people who think features like this are a good idea will hopefully learn they are wrong. Either that or just stop writing code.