I especially agree with and would like to highlight Erik Charter’s conclusion, regarding such parachurch organizations:
The problem with stuff like this is the assumption that ordinary Word & Sacrament ministry is not enough.
This same mistake underlies the ministries of “The Obedience Boys” and The Gospel Coalition. They are impatient with the church and evidently feel constrained by it, so they take it upon themselves to form an organization to “fill in the gaps”.
Why do we need ecumenical coalitions? Churches do ecumenism. Who appointed these individual ministers to do ecumenism or form committees?
These things are all variations of the same underlying mistakes — impatience and lack of trust in churches to do the work that Christ has appointed to them.