i like the idea of this banner pack as there were a lot of ugly and poor quality banners, but its still got plenty of weird choices like :
wolf pack mercenaries, teutonic order, royal knights, d'haran legions, dawn of dread, the kingsguard, phoenix company
Wolf pack is a simple wolfs head on normal background, don't see anything wrong there.
Teutonic Order uses a historical insignia of the Order (check this guy:
http://upload.wikimedia.org/wikipedia/commons/2/29/Hermann_von_Salza_Painting.jpg )
Royal Knights is borderline, but kept "simple" (means, no comic, even the plant-thingies on the cross look bannerlike)
D'Hara is a "helmet/face" abstraction on a red background, maybe too "detailed", but that gets lost ingame anyways, and there it doesn't look out of place.
Dawn of dread, I agree, it has this strange "mosaic" texture
Kingsguard, pefectly fine in my eyes. A simplistic thingy on a simplistic background.
Phoenix company, borderline as the bird is pretty detailed, yet kept simple enough trough the use of few colours.