It’s obviously not a 1:1 recreation, but I think you’re underplaying the similarities and overstating the differences. This set very clearly used the concept art as a base.
The gloves and boots are not completely different. The gloves have additional features, but those added features are built on the same cloth hand wraps from the concept art. The boots, too, both have vertical tooling on the front and an embedded element that points down into the cleft of the hoof.
As for the belt, the emblem on the face plate is exactly the same. It even has nearly the same groove placements on the bezel, and so do the smaller plates. These smaller plates also have the same hanging elements.
Sure, the helmet and shoulders are new, but I’d wager that was motivated more by an arbitrary need to design a complete set utilizing all armor slots than anything else. In fact, I would suspect that most of the changes were made to avoid any accusations of the set being too plain.
Personally I would have preferred that though. There’s at least 11 different colors and eight or nine textures at play here, compared to the seven colors and five textures in the concept art.
The set is very busy. There’s like four different highlights, and the inlaid purple cabochons don’t even color match the raw crystals on the shoulders.
What is meant to be the base color? Is it the green tunic, the brown leather, the red sash, or the beige linens? What are the highlights? The gold trimming? The two different purples? Maybe the red is a highlight? The green? Or the blue-green collar? You can’t really tell because all of these colors and textures are being used in almost equal proportions. I’d probably say that the green tunic is the base, but with so many other elements in the set it becomes muddled. I’m not saying that all designs have to follow a formula of base color with compliment highlights, but to me it looks like a Draenei went into a dark closet and came out wearing four different shirts at the same time.
As an added note, this set has features that remind me of the Solemn Watchman’s Garb ensemble, especially in the tunic below the belt. The chain mail looks the same, and it’s layered on the tunic in the same order. Makes me wonder if the designers used that as a starting template… but that is just baseless speculation.
Regardless, one thing that I noticed while examining the concept art more closely is that the Draenei has horse shoes on his hooves! I would love to have that as a customization option. Give us horn caps as well.