Faked KYC certainly seems like the bigger problem.
@LaCosta was kind enough to point me to a geolocation service that appears to be very accurate → https://search.censys.io/
From what understand it relies on a combination of approaches, one of which is an extensive probe network that establishes location based on response latency for requests from a number of geographically distributed servers.
Assuming it can be measured accurately enough, incentivising nodes in more counties definitely sounds good and will help satisfy the IC Target Topology more easily.
If a NP moved two nodes to the same new country, would both nodes qualify for the boosted rewards? Are there any plans for how long the boosted rewards would apply for?