the 16th was passed because courts ruled that SOME TYPES of personal income could not be taxed, not that NO kind could. Look it up. Those two assaults on liberty, as you put it, ought to be repealed, but that is just the start of it.
As long as the feds have the power to borrow on the backs of the next generation, as long as they have the power to print money out of thin air, they will buy off the state legislators and the U.S. Senators even if appointed by those state legislators. I agree that the 16th and 17th should be repealed, but that alone won't stop the centralization of power. There are 13 things that have to be done to stop every way government power is centralized.
Localism is for people who can still sleep at night even though somebody they don't know in a city they have never been is doing things differently. ("Localism, A Philosophy of Government" on Amazon for Kindle or Barnes and Noble ebook websites)