Maps can be bought with NuMaps Lifeupdate for about € 85 or they can be found everywere for download. The only value I see in this moment is the language. May be the Logo could be nice to personalize, but just for fun.
When I will have an original EU model I will see if it will change some other parameters, like Miles in Kilometers, Celsius in Cendigrades and so on. In that case it could be usefull to continue this study.

Once we have all the needed BINs how can it be creaded the new falshing file gupdate.gcd?