Eliminate the electoral college and the United States will dissolve. There would be no need to have an election in small States. The country will be run by a tyranny of the majority.
The founders were wiser than the popular politics of today. What reason will there be for smaller states to remain in the Union? It will be a broken terms of the original agreement for the Union of States. The founders intentionally rejected a pure democracy, which is what we get with the electoral college eliminated. Why did the founders reject the pure democracy ? Because historically they do not last.