More mission, not more churches

I just read this article by Craig Sherouse from Ethics Daily about the shifting missionary strategy in Africa. The missionaries and churches are seeing that the community is crying out for "water, food, housing and healthcare" more than additional church buildings. I like the idea that more can be done through the existing churches to feed, heal and share Jesus with these folks, but it is possible through the existing churches? Are they able to shift to a missional mindset? Or, is it better to start new churches who understand their missional calling and focus? missional