So criminals have another publicized place to commit crimes.
Ding! Ding! Ding! "We have a winner! Give that man a prize!"
You nailed Casper. They (criminals) know the sweet spots to go to. The Henry Ford, Movies, schools , post office parking lots etc...where the law has given them free reign to do their worst. Roughly 3% of MI's population has a permission slip to carry, so the bad guys know odds are they will have little to no trouble doing whatever the hell they want! Come on - if you knew 97+% of the time your victim can't have a fighting chance, you'd be a pretty happy bad guy, wouldn't you?
This is why MI so desperately needs Constitutional carry. If you had it, you would see violent crimes drop as they have in other Constitutional carry states. Criminals want to live too! You make it so there's a good chance anyone they go against during a crime can produce a pistol, guess what? They stop committing violent crime and switch to petty property crimes to fill the gap. I would much rather see a bad guy get away with a (fill in the blank), then take someone's life over their purse/wallet/car etc...
ETA - if more people in any state chose to open carry, I think that would send a clear message to violent criminals to seek other employment opportunities.