It was called the “tea party”, any new movement within the democratic party will need to differentiate itself in name to make significant headway, so we will probably get a “new party” just as a division in the old one expressed through the primary system (assuming our democracy makes it that far)

I think you need to work on expanding your political theory into more dimensions

When we can expect everyone on the planet to be present in a network the conflict and vitrol would be perpetual. We are not mature enough and all on the same page enough as a species to not resort to mud slinging