Sensible way to operate, and great that you wrote about it here, perhaps you will inspire others. I'm not far off that too, though I'm not as methodical.

I have an idea: maybe we should start a "Review your witness votes!" day once a month? Once a month wouldn't be too tiresome for most people I think and it would be a good opportunity to bring up the kind of concerns you talk about (not necessarily against anyone, but just in general) and promote the active engagement of witness voters. This is as important as having active witnesses.