While I agree that such an organization is needed, I don’t ever see one coming to fruition.
I don’t see Satmar* just sitting by while an organization that turns disgruntled Satmars into yeshivish or MO Jews is created. They would denounce such an organization and attempt to use their influence in the Orthodox world to have the organization shuttered.
The Wolf
* I don’t mean to pick on Satmar specifically. I think the same would hold true for most, if not all, chassidic groups. However, Satmar is one of the few with the clout to really make trouble for a pro-Orthodox organization that allows individuals to segue out of the chassidus.