Samuel Bird

It would be incredibly useful to be able to create a sandbox/dev environment for the guide so changes didn't have to made/tested on the prod environment. This was frankly a feature that I would expect to be basic for a system this large and powerful. 

For a large company such as ourselves it is practically game over if we push a chunk of incorrect/incomplete data to the prod environment which means we effectively have to work in a separate application then come back to Zendesk once the content is ready to be deployed publicly.

I have a couple of massive issues with this feature as it stands, your SSO system has no way to be transferred over seamlessly. This means for a system such as ours where we have no Zendesk Logins only the SSO set-up that we cannot access the sandbox without going back and setting up Zendesk Authentication in prod which would break our security requirements. The other large issue is that you cannot access a prod version of the guide, the only reason I was going to use a sandbox was for in-development sections of our guide environment before launching them. 
Frankly, as it stands with the amount of issues people have listed in the comments this feature hardly seems useful when it should be one of the most important ones you have.