All this above discussion is music to my ears.
as i have said previously i have seen many systems win for 3+ years then disappear -why ? was it because they had a "lucky" streak that ran for 3 years and now was reverting to the long term average or was this part of an even bigger picture - only more and more data will give that answer.

2ndly data management - i am always encouraged when i see systems that propose that you back the opening or closing favourite - encouraged you may ask ? yes because it provides mug money - i would say in 20% these things are not known until after the race.