[Tim Wood]

Any time you edit the view state of a window with no perspective assigned, the default settings should get updated (i.e., the settings used when there is no perspective). We are still working on tweaking the behavior of this to see if we can get this automatic behavior to be pleasing to people, so feedback is very welcome.

In a build late today I made it so clearing the perspective on a window would revert that window's view state to the global default (since this was one way that the global view state could get messed up).

If we can't get the automatic behavior to work nicely, we may resort to adding a manual menu option to save the current view state as the default.