Places should not change their names to better reflect more traditional and native monikers for various regions. Names were given for a reason and those should not be changed just because it might be trendy now. We need to keep and value the traditions we have or we will lose our way.
If the residents of an area want to change its name to reflect native traditions, that's fine with me. But as a general rule, I don't think it's necessary. The current names have a history of their own. Who's to say that the "traditional, native" history is more important? It seems like revisionism to try to turn back the clock and rename places to fit a politically correct agenda. Ultimately, the locals should do what makes them happy. As Shakespeare said, "What's in a name?"
A name is a very important part of our identity as human beings. In the past when people have been subjected to a name change, it hurts them in the long run, and we remember the details to be forced upon those who changed. There should be no reason to make someone change their identity in this modern world.
They should keep their names exactly as they are, especially if they are well established. There does not always have to be change. This is a perfect example of the old saying that if it is not broke do not fix it. Just leave the names as they are and keep them that way.
I do not believe places should change their names to reflect more traditional and native monikers for various regions. What was once a part of a certain land does not always hold true. People migrate and move and this happens naturally. Therefore there's no reason to use native monikers. Secondly, renaming everything at once would be a disaster and more than likely uneffective since people would naturally use the old name.