My understanding is, insofar as we're talking about protection from radiation, Venus compensates for its lack of a magnetosphere with incredibly thick atmospher

My understanding is, insofar as we're talking about protection from radiation, Venus compensates for its lack of a magnetosphere with incredibly thick atmospheric cover that does the same work, in fact does it better than here on Earth. That's not to say we would say no to a magnetosphere if such a thing could ever be achievable.