As I see it, RONJA's nature as a hack of ethernet was one of its benefits, it could be integrated with ordinary ethernet gear. I think if one was to try to dev

As I see it, RONJA's nature as a hack of ethernet was one of its benefits, it could be integrated with ordinary ethernet gear. I think if one was to try to develop a followup, basing it on one of the fiber variants of ethernet seems natural enough considering the idea is more or less fiber without the fiber. In theory up to 25G ethernet could be attempted with something like this, anything bigger than that uses multiple lanes or multilevel encoding, but obviously in the real world the practical limit for something that could be built at a DIY level is maybe gigabit realm.