WELL
After a year or so of trying to work with a Realist Lifeline I'm back to a Yamahiko. I'm sure I'll have frustrating days just like any pickup, but I do think it's the most balanced pickup among the commonly available options.
For curiosity's sake I ordered the M8 thread and had it installed threads down (previously I had 1/4"- 20 installed threads up). I do think the sound is better, less bright / buzz but still plenty articulate AND more importantly seems usable at 1mohm, 4.7mohm in addition to 10mohm and 20mohm. I wonder if the installation is the primary change or if the piezo discs themselves have some variability. I think I have old recordings from the previous installation, if so I'll do a comparison recording.