First of all, I do not feel completely educated on how to navigate between multiple \"pages\" of a window.
For example, I have a Window called MainWindow. Inside of
One alternative is to just use a single ContentPresenter, and put your individual "panels" in there, but only one at a time.
Instead of flipping visibility, you could use Data Binding to change the bound content within the ContentPresenter. This would only leave a single "view" in place at a time, preventing the neeed for "a large number" of panels to be loaded.