If a remote peer advertises a route for example X.X.X.X/AA, it would be powerful if the cloud router could behave as if it learned a user-configurable route for example Y.Y.Y.Y/BB instead.

If the remote peer withdraws the route for X.X.X.X/AB, then the cloud router will also withdraw the "mapped" route Y.Y.Y.Y/CD.

This would be useful for implementing traffic controls and steering capabilities, particularly when routing traffic to CSP resources (such as load balancers) that are using stable IP address assignments (e.g. a /20) dedicated for one's organization.