Over the last couple of weeks, I've churned through the 3 series. I've never read the books, and didn't have any fore-knowledge of the series and its premise / lore, so went in with an open mind.
For me, as a TV series, it just didn't quite work well enough overall to be something really great.
I think early on, I was finding myself thinking that the story was mentioning / referencing things which if I were to have read the books, I would have understood better. Almost like tokenism mentions to stuff from the books to keep people happy. I just felt I was missing out on understanding, and just had to move on.
The characters and their portrayal by the actors ... in many places really didn't click and for a lot of the time were slooooooooooow and overly-brooding. I often thought to myself, are they dragging out the dialogue and pauses just to fill episode time here? get on with it. Rand was so lifeless and dull as a character, even from his first few lines, and so was Ngwene - they just didn't seem to remotely click on screen, for which I think the actors (or choice of them) are to blame. In comparison, the Mat <> Elmindreda pair really seemed to work well. Despite all her emotions spoken, Moiraine was facially expressionless compared to the likes of Liandrin. Trollocs ... big ugly mean, vicious creatures ... but here little girl, pat it like a cat ... eh? Overall, hard to get hooked / invested into many of the characters.
The world as a whole ... and travelling through it ... was portrayed in a way which was hard to buy into too. Oh, we need to get to place A it'll be a long journey. Next shot... thats us here, smashing! let go find our person.
The light / dark / one power / threads ... I quite like the premise / notion of all that, but with soo many different ways/methods of its use, it kind of diluted it to me. The one power appears similar to something like the 'force' in star wars, wwhich also has a light and dark side. I'd argue that star wars does a far better job of portraying such a thing to the viewer.
So yeah, OK to watch, but I certainly wouldn't say I felt hooked or invested in the characters or world they were in.