I think there are two separate issues here.
There is prioritization of refugee referrals from UNHCR, and also how you deal with people who don't meet those criteria. I think that all it would take in terms of resettlement is to let the UNHCR know that we want to add, or take away, these specific priorities for any given time. All we have to do is let them know that these are the kinds of people we want.
In terms of your other question on source country, the issue with source country is that it's everybody from that country who is in a refugee-like situation. That doesn't really help if you're trying to target a specific subgroup. I think section 25 would be more suitable for something like that.