At this point, I'm convinced that people come to the army list section and post their army list without bothering to see what other people have posted, written, or been critiqued on.
When 75% of all threads on the first page at a given time are ork army lists, with dozens upon dozens of comments from as many people....
The fact that someone will come along and post an army list that so obviously needs the same criticism as other army lists, suffers from the same weaknesses; well, it just goes to show. All I've got to say for your list is "Looks great, don't change a thing!"