Has any seen the FRD rockbreaker for excavators with what appears to be a ripper tine instead of a moil? I've just seen a video of it and looks the goods. I couldn't share the video unfortunately, Mark has it in for me these days.
In my area they call that Vibro ripper
That's very similar to FRD and look similar to the vibrating rippers the were fitted to dozers but changing the ripper shape is I believe a game changer.