I totally agree. I was just about to post a new topic about this. And I found your topic. I like to see my map clear so I like to explore until all black areas are clear. And also I like to start on same map. So I don't want to spend my time to explore same areas again and again till all areas are clear.(I hate black areas when I tab) I really don't understand who disagree with this idea. They say (this is tough game, you should explore etc etc.) It's even more harmless than getting all researches when you start over. So you should learn all scientific researches again and again.Map should remain revealed if you play at same map as you explored before.