These aren't amendments, these are policies. Amendments focus on individual rights and not the policy decisions of municipalities. There's no way you could federally legislate blight especially because that land is individually/privately owned. The only thing you could do is levy taxes that make it untenable to maintain vacant blighted land. And that responsibility would fall to the states.
Also amendments do not control how much state/local employees are compensated (only congress). Any attempt to do so would be a gross overreach of federal power. Federal education standards could be one, but I'm not sure if that falls into the need of being an Amendment.
Healthcare for All would be the only thing you could potentially federally mandate: "Every American citizen, born or naturalized, has the right to obtain physical/mental healthcare that shall be paid for/provided by the State. Citizens are also free to pay for additional healthcare should the State's services prove insufficient."
This is why I try to avoid politic threads, but couldn't resist given my passion for the country to change for the people.