Congratulations! Hell just froze over.
Even a may-issue law won't be the status quo. In rural counties, may-issue will practically equate to shall-issue. And if someone gets issued a permit in, for example, Bovine County, that person will almost surely be able to legally carry into Chicago.
Then you can start the good citizens of the Chicago suburbs asking: Why is it that Barry from out in Bovine County gets to carry in Chicago to defend himself against these thugs, and I live here and can't do the same?
Hope it works out for IL gun owners, really. I dont think though the lefties are just going to roll over w/o a big fight. Really may issue depends on the obstacles put in the way.