As of now, expect to see the top U.S. born prospects continue to follow the NTDP to the NCAA route. Expect most of the next tier to continue choosing the USHL-NCAA route, with a few notable ones beginning to choose the CHL route. The biggest immediate change will be a sharp reduction in the number of high-end Canadians opting for the USHL/BCHL to NCAA route.
I would venture to guess that in time the CHL will begin to offer modified standard agreement contracts that includes an opt out to play NCAA hockey before the age of 20 in order to lure more of the very best U.S. born talent.