Ugh, no, that's a bad idea. Fantasy adaptation on TV need to be based on a plot which is realistically complete in 2, maybe 3 season max. And by complete, I mea

Ugh, no, that's a bad idea. Fantasy adaptation on TV need to be based on a plot which is realistically complete in 2, maybe 3 season max. And by complete, I mean without any cliffhangers. Lore may exist for the universe, but should not be a mandatory pre-requisite. Preferably it needs to avoid large battles, big creatures and alien architecture, all that to lower production costs. For example - Chronicles of Amber by Zelazny, super cool, I would very much like to see it on TV but honestly it would be a failure in production, butchered by the studio and abandoned after 1 or 2 season while needing 5+. Another example - Memory, Sorrow and Thorn by Williams. Full medieval setting, minimum number of fantasy creatures and screen time with them, small cast. With liberally cutting out whole chapters it can be adapted into an inexpensive, optimally paced 2-3 season show or even movie series a-la LOTR. Diversity in built in, so there is possibility that director won't butcher existing characters for the sake of it. So the source material to be adapted need to be carefully picked with TV constraints in mind, not just whatever is popular among readers.