I’m sorry that I am unable to contribute any code, but I wonder whether it would be too much trouble to extend the functionality to allow users to add multiple flags. I guess the reasons are obvious but let me just give an example: I am about to build a website for a global community of people who are themselves often highly mobile internationally so that it makes little sense to them to select a single national identity, such as “I am German” or “I am from Germany”. What makes sense in this context (and I think increasingly for many people) is to say “I’m of German descent, born in Indonesia and living in the UK”. Putting three flags would nicely sum that up…