Both had strong leads giving it their all to an overproduced script, with multiple writers sticking their hands in the honey jar, something not an issue when Noah Hawley writes his own material instead.
Hulu's producing Alien, they produced Legion, that had all of the above actors starring and Navid Negahban and Harry Lloyd.
What's likely's that we see some of the above names, as Fargo showed he likes to reuse the same people from time to time, that I genuinely look forward to because I would love to see Aubrey Plaza and Hamish Linklater in it most in particular.