I'm not sure whether the request has been made to residences. These days, residences are big, like micro-societies. All sorts of people live there. So there could be people at the residences who would be certainly interested in becoming scrutineers. I am pretty sure.
Often, thousands of people live in those places. So there is a significant potential for voters. In addition, that would help with the travel of people with reduced mobility. As you know, with aging, mobility often deteriorates. Some residences use minivans to transport seniors. However, if they have 1,000 residents, the minivans cannot transport so many at the same time. So I think having polling areas in residences is an appealing solution.