Yeah I'm trying to get my head into how this would come about. It would be along the lines of how agile thought leaders shifted the notion of 'man hours' to 'story points', or how we stopped measuring LOC as a feature of productivity.

But there would have to be some cultural and language support for an entire idea around what a codebase is. The idea that it is an object that can possess the property of velocity will take a bit of enculturation. But the software/agile community has done it before, so...