More clients are wanting to make their sites mobile-ready. I think it would be great if Design Extender would utilize one of those responsive frameworks for its template.
I know I could technically do this myself simply by creating such themes as a Dreamweaver Template and import into Design Extender, but why not just include them by default? That way, you guys can say "Our Extension is mobile-ready!" with relatively small programming effort. ;)
And/or, how about an extension that's similar to CSS Sculptor which is capable of generating responsive-based layouts? DMXZone already has an extension for 960 Grid System (go?18032). Why not create something better using one of those responsive frameworks?