I think America is pretty great; we get a lot of things right. I could offer some tweaks, but my issues are (in no particular order, and in no way comprehensive): wealth and asset inequality, poverty, racial justice, education equality, continued LGBT equality, campaign reform and voters' rights, environmental protection and reclamation, thoughtful and rational foreign policy, gun safety and control, utilizing evidence-based policies for effective government intervention, and a pony for everyone.
I'm guessing these are not the same issues been discussed at a GOP rally.