Yes, I've seen the char trick and will be _borrowing_ it ;-)
Not sure about the averages. Oscillators were not that common back when I first wrote these bots, but now the orbit/osc/random move pattern is common amongst top bots and powerful, so something to combat it is required.
One of the new experimental nanos specificly detects and can combat osc, unfortunately that then tends to make it weaker against true random and longer osc periods. C'est la vie. It and the other updates will require some extensive benchmarking to find the best values. It is a pity my test harness is not multithreaded.