BNL and FRIB are starting an effort to move to a single product. The first step is to clean out all the code and features from the respective product folder so that a product becomes only a set of features and a configuration file. This would already simplify greatly the ability for a new site to have their custom version.
As usual, I have a ticket to track the progress:
Watch it if you are interested.
This is one of those that will stay open for months and months, with some progress each release.