Wow.
Thanks very much for the response. This definitely gives food for thought, and a very solid place to start. I think that between Stars Without Number itself, the BRP book, and Openquest, this is very doable.
The goal would be, I think, to set up rules that allow BRP to work with SWN's game concepts in such a way that each new SWN product that comes out requires a minimum of work to convert particulars. A lot of the SWN rules, like the world creation, factions, the starship, vehicle, and now mech creation rules, should be able to be used pretty much as written, since they don't interconnect tightly with character statistics and abilities. Those areas where they do connect, though, will probably need a good looking at, and some interpretation, in the conversion documents.