Interesting MTO comment - thanks for noting it! Shunt-enhancers have not been approved, tested or implemented in Canada. That approval would have to come from Transport Canada, as it did through the FRA in the US. Does Northern Tracks have more proof than an anonymous MTO spokesperson that 'will have shunt enhancers' means they do or plan to have shunt enhancers??
CN has not to my knowledge commented on ONR Ventures, with or without shunt-enhancers, operating on their trackage north of Toronto. The only reason those subdivisions were even added was for detour purposes, not because the ONR would be operating there. Many have commented that lower speeds than much of the Corridor mean that crossing protection device activation may or may not be an issue.