Actually, that was one of the goals of High Performance Graphics. We explicitly merged the low brow Ray Tracing Symposium and Graphics Hardware, precisely so we could publish and discuss interesting systems-ey things that move the world forward but often aren't really broad or sexy enough for a general SIGGRAPH audience. I don't think there's a great way for it to be considered equally prestigious, but as an author you know (for better or for worse) that you'll have more sympathetic readership.