Wisconsin's flag, ugh:
I don't have any criticism for this flag that I haven't used for all the other seal and blue flags. There is just too much going on, not to mention the huge "WISCONSIN" and "1848."
When I usually try to fix a flag like this, and I don't have any brilliant ideas, I turn to the city flags in that state. Some American cities have truly amazing flags. There are a lot of seal on random-background-color ones as well, but maybe because fewer people have a hand in the design (must be easier to get a flag idea through a city council than through a state legislature) or because there are so many city flags it is statistically more likely that some of them will be good, there are some great designs out there. For Wisconsin, I started by checking out the flag of the largest city, Milwaukee:
Hmm, perhaps I spoke too soon. It certainly is more interesting than the state flag, but it is just as busy, if not more so. The yellow on blue looks good, sort of reminds me of the flag of Kazakhstan. The next largest city in Wisconsin is Madison, the state capital, and a place that has better flag sense than it's larger counterpart:
I'm not exactly sure why they're using the same Native American sun symbol that New Mexico uses on it's flag, but it looks really good. To make it appeal to all of Wisconsin, I just made a slight tweak:
I flipped the orientation, mostly just for the heck of it, and I changed the lower triangle to green. But I didn't use just any green, I chose the exact shade used by the Green Bay Packers. If there is a team that epitomizes it's state better than the Packers, I'd be surprised (maybe the Red Sox). This provides a fifth color to the flag (blue, yellow, white, black, green) while keeping it simple, as well as providing a nod to contemporary Wisconsin.