Make projects "private" by default

We have had several instances in our company, where projects which should not have been shared with specific people within a team were shared, as the project was set to public (default setting).

Would really appreciate it if there was a setting to set a project’s privacy to “private” by default, so such incidents don’t happen. Currently, we have to rely on the “memory” of people to change a project’s default visibility after they create it, which as we all know, is never a great solution. If this can be customized for each team that would be a bonus.

As a minimum, a default setting where all projects are private, unless made public, would really help.