Well, if you did do that then you would have a ton of games without artwork. If a game was only released in Europe or Japan, then it'll have Mega Drive artwork. For a game that is multi-region, the intention is to show the artwork for the game that your entry is based on. So if you have two of the same game, one euro and one USA, then it should show appropriaetly. I don't know where Jason ever got with that stuff, but he didn't get there fully. So in short, there's no easy way to do it. The Audit tool can help if you don't mind a bit of leg work, but in terms of LaunchBox and Big Box parsing out regions completely, not yet.