I don't see how PolyTrack is going to change the game at all or the breeding. Horses will adapt and so will breeding. The only thing that will change is the names of the horses. People will say--well we will never get to see how good a horse could be because he never ran on dirt. Well the same could be said by saying--well we never know how good a horse could be because he couldnt run on Poly. Not sure if Poly is here to stay or not, but it won't ruin the the sport at all.