adding some reasoning behind doing this herculean task

docs/admins/howto/clusterswitch.md

@@ -1,8 +1,10 @@
 # Switching over a hub to a new cluster
 
-This document describes how to switch an existing hub to a new cluster.  The example used here refers to the data8x hub.
+This document describes how to switch an existing hub to a new cluster.  The example used here refers to moving all UC Berkeley Datahubs.
 
-## Make a new cluster
+You might find it easier to switch to a new cluster if you're running a [very old k8s version](https://cloud.google.com/kubernetes-engine/docs/release-notes), or in lieu of performing a [cluster credential rotation](https://cloud.google.com/kubernetes-engine/docs/how-to/credential-rotation).
+
+## Create a new cluster
 1. Create a new cluster using the specifications here:  
    https://docs.datahub.berkeley.edu/en/latest/admins/cluster-config.html
 2. Set up helm on the cluster according to the instructions here: