I am exploring using Node.js for the game server side and then using the PlayFab Node SDK and Client API (user will login against Node and then call code will call LoginWithCustomID) to call PlayFab and external APIs. What advantages would there be for the Node.js code to call a CloudScript function? What is available in CloudScript that wouldn't be available to the Node.js code? PlayFab videos have talked about client-side hacking, do I not need to be concerned with that since the Client API will be called from the server?