Try again. Read Federalist Paper 68.
https://guides.loc.gov/federalist-papers/text-61-70
As well as the anti-Federalist Paper 72.
Also keep in mind the Framer's never intended or expected the formation of organized national conventions.
The Electoral College had zilch to do with slavery besides momentarily (in that time frame) possibly benefiting from how Southern States populations were calculated, but look how that turned out.
Also, if you specifically look at what was outlined in the Federalist Papers, a Faithless Elector was a feature, not a bug. Political parties have completely ruined it by orchestrating to try to legally compel voting via data rather than by conscience and good sense, which fundamentally undermines the proof against a crowd pleaser, but ultimately incompetent actor the Framer's were trying guard against.
I can understand being upset that the Electoral College doesn't seem to be working as promised, but it's the byproduct if taking the screwdriver that is the EC as designed and trying to use it to turn a nut. There is a level of not being applied as designed. You aren't going to fix that without revisiting some structural assumptions. Also, no, I squarely do not buy the Anti-Federalist tune that crowds are somehow free from being shaped and manipulated more than a small number of individuals relatively randomly selected put into a position of deliberation.
People are collectively pulled down in the fidelity of collective reasoning by the damping effects socialization and large numbers, prone to passionate but ineffectual reasoning, and represent a great indicator that something need be done, though amazing at constraining a problem space through Wisdom of the masses, but terrible at managing the gory details for all of the shouting going on.
A person is smart, capable of forethought, reasoned, and generally best equipped when given several options of being able to justify which is better, and developing a workable solution that balances against a wide variety if pre-existing weighting factors.
The entire intent of the structure of our political process was to filter the energy of the whole, into paths of effectively achievable actions to be carried by a few such that the Nation could be driven without an undue on everyone. If you hate Jury duty, imagine how bad life would be if you had to be polled constantly on every decision needing to be made whether you knew anything about it or not.