Great idea again, Swami!

Thank you very much for the next step onto tools helping the programmer in a more direct way with testing and tuning different versions of engines and anyhow and anymore not so different engines, we are getting more and more of them more and more quickly.

Guess this will get more and more important, the less engine- engine- matches bring up significant differences in Elo or whatsoever measured with reasonable effort, the more the engines abilities grow to draw against each other starting from balanced 5-moves-books.