Suppose your project browser is set to organize based on discipline. Now suppose you enable temporary view properties and change the discipline to Coordination. It the view moves in the project browser! What's worse, closing the view doesn't reset temporary view properties. So you've closed the view and now you have to go hunt for it because it's not where it's supposed to be in the project browser.
Temporary view properties shouldn't affect browser organization.
Bonus Idea: Temporary View Properties should clear/reset when the view is closed.