Congratulations on publishing a well researched and well written informative article! I assume that few Medium members took the time to read it or there would be many more claps.

"However, the writers of the Constitution were concerned about some states coming together to dominate political discourse; except they were concerned about states with high total populations, not large cities."

This is an accurate statement and refutes one of the current common justifications for continuing the EC.

"The Founders’ defense that Electors would be free from foreign interference because they were not a sitting body did not anticipate either the expansion of the electorate or the advent of wire transfers."

In my opinion the Founders' defense is valid. EC electors are typically winning party loyalists and rarely act as faithless electors.