1.2.6 will allow other mods to disable specific locations from rendering their sprite by writing
vp_add_planets_to_blacklist({"vulcanus", "gleba"})
in the data-update stage. (Data stage is probably also fine, but I don't like trusting the load order.)
It's a global function so should work in any mod once loaded. Uses internal names. Let me know if something doesn't work.