True, it's kind of a shame that more of the features from Bred Victor's demos haven't made it into mainstream IDE's, such as:-

Inventing on Principle - https://www.youtube.com/watch?v=PUv66718DII (He has a handful of great demos on Youtube and Vimeo).

Another interesting source is Epic's Unreal Engine Dev tools - https://www.youtube.com/watch?v=DshYHUvLaDc