If Illinois can get any carry law passed with preemption thenany changes will only require a majority vote and a new governor. Currently we need 3/5 majority in both chambers to pass any bill that preempts home rule. The only good news there is that a gubernatorial veto is irrelevant at that point.
Passing a carry law now as proposed will allow citizens to protect themselves without a felony hanging over their heads. Privileged carry for now will not stop the move to constitutional carry.