To me your WB engine list has become as important to judge the strength of wb-engines as SSDF is to judge standart chess programs.
Here are some suggestions to make the list even more valuable:
- Only one version per program (like "Crafty"), if you get a new version of crafty, then immediately replace the old one. This is not a problem since huge rating jumps tend to happen seldom enough.
- Don't have any commercial programs like nimzo play, or if you do: add a "(c)" to the program name that everyone can see.
- Don't use beta-version which are unavaible to us all, EVER!
- Play a round of Nunn Positions instead of using the built in opening books, we want to know the engine strength, not the opening book strength.
- Don't EVER play a match with permanent brain on, if you can't switch it off don't test the program. If the author doesn't like it ... not your fault.
Ok, of course it is up to you how you do your testing.

Regards,
Georg