It's a...proposal, but you have, I think, an existing problem you have to address. The previous government created a regime that designated certain countries as “safe”, and that designation was based on the premise that a refugee claim made by anybody who was a citizen of that country was, in the view of that government, not genuine.
Now it so happens, as Senator Martin said, that South Korea considers North Koreans to be citizens of South Korea, as it were. The intent of designating South Korea a safe country was really not to go after South Koreans but to prevent North Koreans who reached Canada from being able to successfully make refugee claims.
If you want this proposal to go forward, which is an interesting proposal and is certainly worth attending to, you would have to confront the contradiction that currently exists, which is that the designation of South Korea as a safe country effectively precludes North Koreans who actually physically reach Canada from making successful refugee claims. You might want to consider eliminating the safe country of origin if you want to go ahead with this proposal.