There's one thing everyone here has missed so far... security.

When we allow developers to write the code they know straight into the db, we pretty much immediately remove sql injection attacks... I've seen enough inline sql in old asp and even .NET that I had to run a demo against the companies development environment and drop the database from the website before anyone believed me.  Removing this threat alone is worth having to double check the junior programmers code before it goes into production.

Who allows unchecked and untested code into production anyway??  Junior developer or senior, everyone makes mistakes.  Bottom line, test your code, test your teams code, it doesn't matter where that code is, make sure everything works before the public uses it.

In case you can't tell, I'm excited to see what can be done, and how easily it can be done.