I'll try to keep this brief. My problems with WCK are the same as with any TMA-its an ART. I seek out more totality-ie, striking,grappling,weapons and street use/tactics. I have found folks like Tony Blauer to give some of the best training ideas for developing thought processes,spontenaity and such. I've found from Matt Thornton that you can develop some good skill in a short amount of time with a well rounded curriculum,aliveness and good coaching. Last and not least some great advice from real world folks like Kelly Mccann,Masaad Ayoob and Gabe Suarez, esp when dealing with firearms.
I find most arts bogged down by terminology, "we step this way not that way" and so forth. Even FMAs have become convoluted. You dont need to know FMAs to beat someone skillfully with a stick or cut them with a knife. What about the interplay of firearms and empty hands at close range? Drawing a weapon while fending an attack?
Then there are tactical considerations like environment or situation. For example, I know x number of ways to step, punch and kick-but how would I fight off an attacking dog? Whats the best way to handle a car jacking? A home invasion? What about first aid trauma care? What about how to talk your way out of a bad situation, or even a bad neighborhood?
Self protection is what drew me to TMAs, and its what is drawing me away. I really loved doing WT and escrima, but looking at the "big picture"-theres just so much more to it all.
So much for brevity.