Because there is just the middle design, seeing the white flag without such other colors added makes it an eyesore. Though there are others with white also, this one's center design is hard to see when viewed from far away. Fine to have an eagle, but the definitions should be larger and clearer.

Well, visually it is not bad, but why does Illinois appears on the flag?   It lowers the value.  The name should never appear on the flag.

I always thought this flag was boring when I was a kid. I suppose the eagle is a good symbol, but what's with that weird flag he's carrying? I never really understood why it wasn't a normal american flag.