It is good in some ways that the jargon has gone viral, but for the bad ways, for the prevention of assuming gospel-centrality, it's always good to recalibrate. Here are some related links:
Joe Thorn: Gospel-Centered
Ray Ortlund: Centered On One or The Other
Redeemer City Church: What Is A Gospel-Centered Church?
Joel Lindsey: Why We Need a Gospel-Centered Missional Church