adding IP geo block for admin and front facing pages

Hi there,
I'm considering using defender, but I don't see any mention of being able to geo block by IP address. When I added a geo block plugin to my sites, it cut down spam and brute force by a huge amount. I only work with north american audience so I block everyone but Can, US and that is a huge boost to security right there.

Any chance this could be added to defender along with IP black/whitelist?