Feature Request: Ability to filter our test/demo accounts by default

Our demo/sandbox/test (including automated testing) accounts/users often clutter up reporting. There have been a few times when we get excited that a new feature is being used, only to find out that those users are in demo/test accounts. We don't want to blacklist these users/accounts, because sometimes we do want to see what people in demo situations are doing. I just find that people can jump to conclusions when seeing a report without thinking to filter out test accounts.

Idea: as a PX admin, I would love the ability to filter out these accounts by default. Other users could still turn off that default if they were specifically looking for reporting on demo/test accounts.