It's important to have a balanced approach that takes equity and inclusivity into it.
I can give a personal story that will help shed light...and it hurts me a bit to say it.
One of my post-doctoral researchers told me, one week before they were giving birth, that they were going to have a child, because the culture they came from was such that it was not something to be celebrated or to bring forward. Through my own experiences, taking parental leave for every single one of my children, and there are three of them.... It's about trying to culturally shift people, so they realize there are opportunities in Canada both to have a balanced life and to get a higher degree.
That part would help a lot with attracting those people to Canada. It would even attract Canadians to stay within the system if they realized that all the benefits they would receive while working and going through parenthood or other life changes are available to them as students, as well.