Hi Philip, hi all,
I think you can change the admin's name using the Dashboard API.
At least, I've successfully done this on one of my Customers this morning using this Windows batch command:
.\curl --max-time 3 --proxy proxy.intra.company.com:8090 -L -H "X-Cisco-Meraki-API-Key:***mykey***" -H "Content-Type:application/json" -X PUT --data-binary "{\"name\":\"Michael Fox (newco)\"}" "https://n213.meraki.com/api/v0/organizations/<orgID>/admins/<adminID>"
Of course, you need to install curl and all required certs first and insert some details (name of proxy server, your API key, orgID, adminID), but it worked for me!
Regards, AE