I've seen Warcraft fans call for him to play Arthas in an Arthas tv show/movie. I can see that going bad very fast. Almost no adaptations can live up to their source material, much less surpass it. Stories in video games are as irrelevant as stories in porn, so video game story quality in general is very low or outright nonexistent.
Representatives ranging from “Planescape: Torment” to “The Last of Us” just called. Actually, the current fear is that they fuck up “The Last of Us” series, because the first game was a masterpiece but the second sucked ass.
Generally speaking, videogame adaptations were seldom good because the source material was seldom approached seriously, like it happened with superhero movies. Only when movies like “Blade”, the first two X-Men and “Superman” by Sam Raimi started appearing the studios understood the potential of the genre.
Regarding Amazon, it is important to remember how Amazon Prime and Amazon Studios are two different entities. Amazon Studios is the hot zone of wokeness that gifted us “The Rings of Power” and “The Wheel of Time”, Amazon Prime is Amazon’s streaming outlet (actually part of your Prime subscriptions, which includes from eCommerce services to Audible). I’m quite happy with my Prime subscription, as it offers tons of content (for example, with Prime Italy I was able to catch up with a lot of Italian classic movies unavailable elsewhere). As long as Amazon Studios and the current woke bee-Queen Jennifer Salke are not part of this project there is hope.
I didn't say nor imply there were no video games that can be considered equivalent to literature. Of course,
Planescape: Torment is something of a cheat because it has over a million words of text in its script. You'd be better off using
Legacy of Kain as an example, as lead writer Amy Hennig was able to juggle philosophy, time travel, morality, religion, etc without falling apart (much).
The plot of Warcraft is nowhere near that level. There are very few adaptations that actually improve on their source material, and the best adaptations normally barely meet the standard set by the source material. Warcraft's plot is hackneyed, cliched, schlocky, relies on characters acting like idiots, etc. Most video games players, especially if they were children at the time, don't notice the bad writing and form nostalgic memories that last into adulthood because the gameplay is what mattered. In passive media, you can't rely on gameplay to hold up a bad story. You can't rely on colorful presentation and cgi anymore. The story itself needs to be good, or at least not stupid.
Audiences are going to notice the problems in the story and will criticize it. Especially when you'd have to stretch
~40 minutes of cutscenes into a coherent plot across at least seven hours of the first season alone, and the writing quality only declines from there. The most that the human campaign story has going for it is the pathos from Arthas' tragic descent into darkness, but that's undercut by the fact that the characters make the most obviously idiotic decisions they can make at the time in order to move the plot along. Medivh in particular just expects people to listen to him despite never providing any compelling reasons to, even though he could easily just share his intel on the Burning Legion. In the undead campaign, Arthas becomes a generic soulless villain with no motivation other than obeying what the NPCs order him to do. To add insult to injury, this applies to the undead as a whole. The purpose of their campaign was to open the gates of hell to let demons thru, then once the demons won they'd be discarded. (For reference, this was not the original plan and it was changed to this after the demon campaign had to be cut. The original plan was apparently that the undead would try to take over the world, altho no scripts were ever written.) Arthas makes a cameo in the night elf campaign telling Illidan about the Skull of Guldan, but that's all the undead do to try avoiding their own destruction. It is not a satisfying story unless you played it as a ten year old two decades ago and still have nostalgia goggles.
I do not envy the writers who have to write the adaptation. You could take the basic premise and make a good story out of it by just ignoring the canon, as some fanficcers have done, but if they don't adhere to the canon then fans will be livid. But if they do adhere to canon then the story will be terrible and fans will complain anyway, which seems to be the most likely outcome in reality.
Of course, it will be fun to see armchair writers on youtube try to rewrite the show to make sense and try to juggle that will adhering to the game canon. I predict we'll see a lot of flame wars between armchairs who don't care about canon and those who try to fruitlessly justify that the canon plot could ever work.
If Cavil is smart, then he'll just stick to 40k. 40k canon is officially described as unreliable narratives to excuse all the inconsistencies, so he has a lot of free reign to tell original stories that utilize the setting without being beholden to bad writing.