I still disagree. I think it is hard to concept for the final look they are going for. The art team chose an artist, Alfonso Mucha, who would be very difficult to mock up starting art for. His style is completely different than anything we have seen in a game before and I could see how the concept art team could run into an issue of the concept art being more detailed than the abstract finish.
Keep in mind too that at the very least Stardock's space games have looked terrible all the way up until a few months before release.
To give you some examples of the final result they are going to go for, here are a couple of pictures by the artist whose style they are trying to mimic:
Here is my favorite painting by the artist:
and here is one from the seasons panel:
The concept art may not be pleasing to the eye, but how do you ask someone to mock up something in this style? Especially considering I have only ever seen one piece Mucha has done that portrays a man, and all of his images are very basic, the artistic styling primarily being the flowing of the bodies and color.
Finally, who cares what the concept art looks like as long as it conveys the point to the 3d artists? Probably the only mistake Stardock made was publicly displaying the concept art for fan critique.
They should have just had a guy come in and do some Warcraft looking stuff for the publicly released concept art.