Maybe the problem begins with the name: Social Science. The term science pretty much implies the scientific method and the quest for unique answers to carefully isolated, narrowly specified problems. Carefully isolated and narrowly specified are the antithesis of what makes sense in the study of social issues and interactions.
I agree that the current system is broken and I like the direction of many of the suggestions you make. When you say
“Social sciences only need to remember and show the people that they’re here to help them live a more fulfilling life and build a better future, embracing their normative dimension once again in the search of good ways to live and good social orders.”
that sounds a lot like philosophy (although academic philosophy is largely broken in the same way you describe for the social sciences) or, dare I say it, religion.