I still don’t see the link between Extraction and Steambox/OS. (But I get it: GNU/linux gains popularity among some game developers and an established publisher. I just think it’s a bad argument for Extraction on GNU/linux. A better one would be: You’ve done it before and most of us wants it!)
(Unfortunately(!!!) SD is no longer using the ID engine. Otherwise I would say: It is time to hire TTimo to do some freelancing!)