>>1. Complete annihilation of the electoral collage.
Be careful what you ask for - that one goes both ways. Can you say President Gore?
There were a number of threads in 2000 about the Electoral College. If you read them, you will find that the EC is what keeps America a single nation. If all that were needed to win the presidency were a simple majority of the popular vote, then the ward heelers of NYC, LA, and Chicago would lock it up every time with their walking dead and brimming ballot boxes. Presidential candidates would willingly be gut-shot and left out in the sun rather than waste campaign time in Peoria. "Flyover country" would become something more than a snide joke about the cluelesseness of the elitists. And within a generation, you can be sure that the countryside would erupt in civil war. No more USA.
The Founding Fathers (take that you PC pansies!) knew better what would preserve the Union they created than you imagine.