Read-only access for private projects

I have had several projects that I have sent out to collaborators to remix before I am ready to release it publicly.

Unfortunately, when I add collaborators to my private project, they get edit access and can mess up the original file. I can write PLEASE REMIX DO NOT EDIT DIRECTLY in the readme.md but we all know people do not like to read things.

This is a major issue blocking me using glitch in a corporate environment where things cannot always be public from the get-go.

I wish to remix private projects, but you have my vote for sure!