I see. I've got some more research to do. Thanks again.

 Thanks for this. I agree, the MVPF approach does seem to be somewhat limiting, but it's got me thinking in the right direction. It seems like the US Federal CBA system is pretty ad-hoc. As far as I can tell each department is responsible for producing their own CBAs, and they each use their own methodology for quantifying things. Do you know if that's right, or is there some standardized methodology that I'm not seeing?