I would say first off, COA and shadow dancers require way to much str. Even if COA was a low str req, I would still use Shako over it. Shadow dancers would be nice for the kick and + skills, but just too much str required.
About fade and weapon block, why would you max fade when you only need it for 50% DR? Unless your using other items that don't ahve DR on them, why bother. The curse duration, resists is plenty high enough at lvl 25, and if you have max dr, your just wasting 10 points.
Weapon block has huge diminishing returns to it. After around 58% block, it begins to take 2, and then 3 points per 1% block rate. I really don't see the effective difference between 59% block rate, and 62% block rate.
I would much rather have a very strong dragon flight kick, and 59% block rate, rather then a 1 point dragon flight, and 62% block rate.
Its all about what you want though, since its your build. I think my build is perfect for me, so I just shared what I think. If you disagree with some things, your free to experiement with them...