I don't recall which thread had the question about more opportunities for amber zones for players, but nature is giving us another idea - a star system where the star has regular, but unpredictable flares that scorch the surfaces of barren planets and cause radiation spikes.
https://www.yahoo.com/news/m/fa291411-1940-3ba0-b484-435d9a2f705c/ss_proxima-centauri-just.html
https://www.yahoo.com/news/m/fa291411-1940-3ba0-b484-435d9a2f705c/ss_proxima-centauri-just.html