That list is no different, ad under MCL 28.425o You can currently Open Carry in them with a valid CPL.
The bill flips the law, and then makes is illegal to OC in them places unless permission is given! And then have to take another class, and pay for the upgrade of the CPL.
I dont CC, for one its uncomfortable, Damages guns finishes, And Longer draw time when in a predicament to draw. Theres plenty for OC and Plenty for CC, no need to outlaw one over the other, just add the exception for people who are die hard CC'ers and want to do as such like OC'er they take the class.