I only want probes to get banners from Martians. Plating is useless to me and I've got all of the saucer drops I care about. With my boss/invasion arena, the Martians are not any kind of threat, so I really don't want them all that often, nor do I want to sit around in space waiting for a long time for a probe to show up. Since blood moons happen all the time, it's useful to take advantage of that, assuming I'm not using the blood moon for something else (lately it's been squid and snails in the ocean).