Much like the bitter fan who knows way too much about the 3rd string QB for the local NFL team, I will provide a personally highly cathartic info dump about this whole situation, and hopefully answer your question too. 
It would have definitely tried to capture the spirit of the books. Amazon at the time was trying to produce their own Game of Thrones, so an Adult themed Conan show was right up their alley.
However, while it was still in development the former head of content development for Amazon, a guy named Roy Price, who was very supportive of the show, was fired in 2017 by Amazon because he made improper advances against a woman named Isa Hackett who worked on The Man in the High Castle. You won’t see me defending him at all, but him getting canned set a whole bunch of disappointment in motion.
They hired the aforementioned Jennifer Salke to replace him, and she started all that “toxic masculinity” nonsense, beginning with using it as justification to cancel the Conan show.
She replaced that show with Wheel of Time and Rings of Power, both highly substandard shows that I despised for how badly they represented their source material, so yeah I kinda have a grudge against her and it’s why I know all these details. It took me a while, but I had to figure out who was ruining some of my favorite nerdy things.
Anyway, Ryan Condal, who was the creative force behind the Conan show, moved over to HBO and helped develop House of The Dragon with Miguel Sopachnik who did some of the best later Game of Thrones episodes , including Battle of the Bastards. Sopachnik left HotD before last season though, and Condal is flying solo now as the sole producer of that show. That show has some issues because they cut out the most pivotal event (which would have been covered in 2 additional episodes) from the end of last season due to budgetary reasons.
As the AI summary said, Robert Rodriguez tried to get the Conan show going again on Netflix but it never panned out and the rights lapsed.