Honestly, I see states becoming more and more polarized on this issue. Increasingly, states that want to allow carry are moving towards constitutional carry. On the other hand, the more liberal states are doing all they can to prohibit anyone from gaining a permit to carry.
I see this going to SCOTUS within a few years. People are getting too fed up with governmental over-reach on this matter.
If it does go to the supreme court with all the polarization that exists it's going to cause an uproar either way. But in my opinion all of these issues should be left to the states, however a federal constitutional carry may be a better outcome for us all because eventually many states will ban CC leaving only a few strongholds of liberty. But I'm glad to see a constitutional carry revolution over these past 5 years