We could, given enough time and effort, implement something that would do what we need, but management tends to be very conservative about change, and very reluctant to allow us to spend time on anything not related to the current projects. It's the power of inertia, and the old "If it ain't broke, don't fix it" mentality. IOW, the bb/bbgen-3.6 combo is "good enough" to keep running.
I have a similar kind of management. I came across Hobbit around Christmas and have been running it in parallel to Big Brother since then. The problem of how to switch over was solved for me back in May when the power supply in my Big Brother server blew out. I swear it was nothing I did... :) The machine is old and probably off maintenance, so I figured it would be faster to load a backup copy of my checkout scripts onto the Hobbit server and run with that.
Everybody I've spoken with about it either doesn't care or prefers Hobbit. The lone exception being one person who would prefer to just click on a recycle icon to flip between the main page and the summary, instead of using the drop-down menu...