Scenario: I have four orgs. There are PROD, TEST, DEV, and SANDBOX. I build a workflow in DEV that fires depending on the Business Unit of the User. When I ship that workflow to any of the other environments, the workflow won't activate because it doesn't have the correct Business Unit GUID.

If the business units in all orgs are named the same, can't the workflows just "figure it out"?

With views (on which Dashboards are based) it's even worse. At least with workflows, the offending GUIDs are denoted with quotation marks that indicate the GUID is from another org. But in views there is no such denotation so, if the business units are named the same (but it's the wrong GUID) there's no easy way to tell.