I loved Legion. Also loved Fargo (I guess he worked on that show too) and I'm sure he could do a decent ALIEN mini series.
I don't know why people are taking that quote out of context. He very clearly says he would figure out the characters on their own merit to make them compelling and THEN throw the Xenos into the mix to dial that shit up to 11.
And I think Hawley totally has the right idea. Capitalism plus the greed, vanity, and power hunger of humanity could definitely be pulled out of the films, including Prometheus and Covenant. Thats a strong theme to work with.
Space explorers, ancient alien space archeologists/scientists, etc. Those aren't themes. Those are plot points and backdrop setups. BUT they could absolutely work with the themes of corporate capitalism and the expendability of humanity in the pursuit of wealth, power, technology all of which could culminate with discovering a Xenomorph which would represent a remarkable vessel that literally represents the pinnacle of science, violence, biological weaponry. The Xenos literally cannot thrive without destroying another species much like corporations are recklessly harming the world.
IMO the show could focus on a corporation, perhaps a subsidiary of Weyland Yutani or a rival that has also discovered a Xenomorph and the pursuit of the Xenomorph ends up being their undoing. It results in the destruction and death of their off-world colonies.
I'm thinking The Terror meets The Expanse.