The discussion on the Electoral College is interesting but mostly wrong. Perhaps it would benefit from someone who was there. Moi.
The part giving each state 2 votes for their 2 senators had nothing to do with slavery. It had nothing to do with limiting the democratic aspect of the election, though several of the Founders feared absolute democracy.
The Constitution required 9 states to ratify, or it would become a dead letter. The smaller states feared being ignored and overruled by the larger states.
The 2 extra votes for every state was a compromise, a bribe to get them to vote in favor. This was primarily for the benefit of Rhode Island and New Hampshire. Delaware, the smallest of the states needed no such inducement. It was the first state to ratify.
As everyone knows, there is a movement at present to modify or eliminate the Electoral College. There is another movement that few seem to be aware of. It is to bring suit to the Supreme Court for a declaration that the Electoral College was overturned by enactment of the 14th Amendment. The former seems to have a better chance but, though most are hot for change right now, we have a tendency to become distracted rather quickly. So, the odds are nothing will be changed in the near term.