Visit EU1 on prime time, come back after. Or simply understand that when the ennemy team got 10 crossbowmen/archers on a roof, protected by infantry, it becomes slightly annoying. Giving access to all roofs would be a shitty thing.
But on some side, I don't really know. We should make a ladder day, where we test this feature now, and provide feedback about the gameplay changes it causes. If we see more camping, or more teamwork, community should decide about putting them back or not.