<Qoute>
"Works better if you have the top ranked place getter which had won by 2.5+ lengths or more last start"

Interesting idea Bahgwan. Not seem many systems with "beaten length" features for some time. One of my early ratings systems used this, interesting to see it mentioned again.
But you must also filter then, if it was the same jockey riding the horse that won.
It might be worth considering.