Instead of the proof being the file name (which can often be some random jumble which means nothing to the person getting the email) there should be a button "Copy project name to proof name". At least then the reviewers will know what the project the email is asking them to review is related to. ...

I agree this is very frustrating and needs to be changed. I do not want anyone able to add expenses to the default types.

Yes, this is critical to make sure reviewers see all pages