Going https resulted in all n/a

[WebsiteSpeedExperts]

The main benefit of a CDN for larger, more trafficked sites isn't really the web page improvements, but rather the offloading of requests for static resources. If your main site isn't being hit for the same JS file, then it can handle more "real" work requests like requests for new page loads.

Up until your sites gets to a certain point, most people don't need one and they just add complexity to deployments without no real benefit most of the time.