One topic that's been on my mind lately, where I think the TV show could be either amazing or awful, is in its visualization of channeling.
The showrunners have a tricky task here, as there were many, many scenes in the WoT that hinged on actions that were entirely invisible to a non-channeling observer.
When they show the POV of a channeler (which will be more often than not, if the show gets past the first few seasons), it seems like they will need to add CGI effects that convey the origin (Saidin/Saidar/True Power) and element (Earth/Air/Fire/Water/Spirit) of each thread in a distinctive way so that the viewer can tell the difference.
In my mind, the weaves form a sort of overlay atop whatever visible manifestation the power has, but the texture and color of the threads differ. Saidin has a "sharp" look, as though made of needles of glass or ice, with high contrast, angles, clearly defined edges. Saidar looks softer and more fuzzy, like actual thread or yarn, with smooth curves. Elements give the weaves color (Earth/Air/Fire/Water/Spirit -> Brownish/Sky Blue/Sea Green/Crimson/Silver), and perhaps a bit of an aura (wisps of Dust/Cloud/Flame/Spray). The TP overlays them all with sooty blackness.
It also seems like they should have consistent visualizations for a channeler's link to the Source, for Shielding/Severing, and for the Taint (perhaps a foreshadowing of the TP special effect). They'll also need a way to convey the "goosebumps" sensation when Rand senses Saidar in use - perhaps similar to the way the Highlander TV show conveyed the "Buzz" when they sensed each other.
How do you visualize the weaves in your mind? Do you think the show can afford to do it justice, without blowing its CGI budget?
I think I'll be happy if, after watching a season or two, I can distinguish the weaves depicted in the show on sight.