You should create a feature that whenever you save a project (ctrl + S) Premiere automatically will save the project to another destination of your choosing simultaneously. So let,s say I have a project on D:, in the settings you select "also save project to ________ drive. I have run into many corrupt projects, and this can be a convenient way to retreave a corrupt project. Yes, there is auto-save, but sometimes that does not save the latest version.
You have "Save a copy" in the menu, but it should automatically do so.
Jim Simon commented
Search for "Save Version". Give it a vote.