Leagueman

Assume you want to share leagues or you want to import leagues from others.
This is currently not possible, because all have different "general data". The team id is different, maybe the team is called "Bayern München" instead of "FC Bayern München", how to identify this team for a correct import of a whole league?
The idea is a common project and team directory, where you can update your database automatically, if you want. Please discuss the requirements of such a project here.