I don't think he will do another Alien movie. Covenant was box office disappointment and now 2049 (Scott Free produced it). I think Ridley's got enough of Sci-Fi for now. He wants to do The Cartel, WWII movie and he always wanted to make western (Wraiths of the Broken Land?) and pirate movie. With Ridley everything changes so quickly. He's got plenty of ideas and is involved in many projects. Who knows but I claim that he won't make it as a director. He may produce it.