New poster, long time book fan here. I'll just say that I don't like the re-appropriation of any original work, that changes the fundamental theme of the original. I guess you can call me a purist of sorts, but so much from my youth has been brought back and twisted over the years, and to have so much that I treasured in TV/ movies/ books changed to satisfy new cultural expectations and norms, outside of the original generation it came from, seems very disingenuous and lacking in respect for the original author'(s) work, aside from the lack of originality and innovation.
WoT (books) had fantasy aspects that brought more to the table than dark-sided humanity as a main story threat, even if some of it originated from humanity itself (i.e., boring into the Dark One's seal, Trollocs/Fades/Grey Men created by Forsaken, Mashadar). Even the more supernatural "light-sided/ Creator" aspects have their meaning lessened (i.e., the Pattern and Ta'veren reference to the 3 boys, the interaction between Rand and the Creator at the Eye of the World, the sky battle scene at Falme). Each of those things from the book took on a life of their own, and brought their own independent sinister or holy feel.
Everything in the show so far, and even more so in Season 3, places most of the onus on human-related tropes of good and evil. Minus the death of Melindhra (which actually could still be rather assigned to the breaking of her dark oaths by refusing a direct order from a Forsaken, rather than attributed to the Dark One), all the main focus is on human threats, without the supernatural darkness existing in the background. Even the Bubble of Evil concept from the book was something explained away as Lanfear's doing.
Aside from that, the peoples and cultures in the show have even less distinction now than in the books, aside from a change in wardrobe. Every place visited so far is multi-ethnic, with no real distinguishing cultures or even languages/ accents. I don't think RJ did a great job of creating unique place identities to begin with, but the aspects he did present have been lessened in the show (i.e., Egwene lying to the Wise Ones and Toh only being referenced for Rand to feel bad after killing the child, and more time spent on a bawdy song than explaining how Tanchico is different than any other place [like, what is the Panarch]).
Even those touching the True Power (including Rand, unless he was somehow taught by Sammael in half-a-show's timeline before he was killed after being captured) don't need to be bothered with learning how to use it, or learning from others. They just "feel" it, or picture the end result they want, and it all works out; more magic willpower than technical use of weaves. Healing arrow wounds can be done by a couple girls after only a "you are the bud" speech, and a prophesized Dragon Reborn can be "proven" by just channeling a fire dragon in the sky. Tar Valon culture and women Aes Sedai mean far less in the show, and are shown as emotional and impulsive, rather than composed and calculating (a unique, organized body, on a national scale, to be reckoned with, and respected/ feared), as in the books.
Overall, I think the show is getting better, if it were something on it's own, or based on a "re-telling" of the books. As a visual representation of the books though, it is only getting worse.
And in either case there are an increasing number of plot holes and contradictions, as well as obvious direction to just move the story forward (i.e., Sammael the greatest war-tactician who can only think of a direct attack with a Power-Hammer), rather than explaining reasons why or presenting it without contradicting events in previous shows. As a result, the Ogier have effectively been written out, the Seanchan threat dealt with, no more wolf interaction for Perrin, no Birgitte, Padan Fain and Luc/Slayer are a non-threat, no Salidar and the two Towers (along with more prophecy by Nicola), and the Last Battle will likely be a showdown between the remaining Forsaken (namely Lanfear) against Rand and Egwene.
As a bit of an aside, is Lanfear supposed to be using the True Power at the end (black threads surrounding her during the battle with Moraine)?