I'd love a high budget, high quality adaptation of the Witcher books. Not that utter crap polish tv shat out several years ago, nor the supposedly coming movie (with a small budget and a ton of inexperienced people involved).
HBO should really pick this story up after they're done with GoT. They clearly know how to do it properly and could do the series justice. Especially since the story is just as brutal and emotionally engulfing.
Cast Mads Mikkelsen as Geralt before he gets too old.