The other panellists may have more to add on some of the other jurisdictions.
The most natural comparators for Canada on indigenous issues would be jurisdictions like the United States, Australia and New Zealand, in terms of some shared political practices combined with the nature of the colonial experience, the proportions of the population, and so on.
I understand that Elections Canada is in some discussions with the Australian context. They would be better prepared to shed light on that.
I looked mainly at some of the scholarship on the United States, a country that has been much more active than Canada in some respects on this issue. Someone going back to the history of 1975 could look into how it was that they managed to make the adjustment so quickly versus what one hears about the challenges Elections Canada thinks it would face.
Others may have more to add on other jurisdictions.