Its very easy to point to the lowest common denominator.
https://us.forums.blizzard.com/en/wow/t/a-collection-of-awesome-looking-mechagnome-mogs/589041
Now take a look at this thread and notice how many likes the thread has. You can make any race look aweful by choosing the most aweful mog choice for it. This also shows that you don’t even need a tabard or robe to make them look good.
EDIT: Wiccan was right. Lost cause. Lets get back on topic.