Absolutely nothing will change.  The debt limit is raised every few years with the party in power claiming cats and dogs and assorted ocelots will rain down if it's not lifted, while the party without power claims the other is totally reckless and irresponsible.  A few years later the two parties swap positions and go at it again.  No one is dumb enough on either side of the political divide to risk default over a few political sticking points.