I worked in the BOSS linux team from 2010-2012. I can probably answer some questions.

Let me address the most common sentiment.. Why BOSS when we already have Debian, Ubuntu, Redhat etc.?

Support - gov bodies moving to linux need guaranteed support at optimal cost.

Localization - if you are working with Indian languages primarily, BOSS linux provides a better experience out of the box.

Some customization - some depts. request and get further customized versions.