No, it would not be a good start. How do we know this? Because that's what the actual start was. And it led to Facebook becoming the carrier of all the hate people could convince each other to accept. And people targeted each other, conditioned each other, to normalize this hate and acceptance of violence against 'others'. And so we have the situation we have today, where Facebook was forced to acknowledge that they became a platform for hate.
How about instead of a one-stop-shop social network, we go back to the random topic-specific forums of yesteryear? It decentralizes discussion, allows individuals to freely associate among themselves, and doesn't result in a "one size fits all" mentality when it comes to moderation.