I was thinking about this a few weeks ago when I ran across an engine using LN's
ceramic lifters.
What if we were to use a traditional rocker with a ceramic pad under the cam follower? You would have the simplicity of a traditional rocker (no needle bearings and no change to the cam profile) while reducing friction. You could probably stop worrying about ZDDP content as well.
Schubeck Racing, who made the ceramic lifters, has some pretty slick
roller rockers, and it looks like they at one point made a rocker like the one I'm envisioning. Has anyone here had experience with these parts?