Now, an additional question in the hopes that I can avoid having to start a new thread.
When already in an Orthogonal view (Front, Left, Top, etc), when I use the middle-mouse button to rotate my viewport, Blender defaults first to a User PERSPECTIVE view, even when I am currently in an Orthogonal view. This is very annoying, because rather than a seamless, clean, quick rotation away from the current view, everything momentarily shifts into a Perspective mode (which can be very jarring when zoomed in closely!), and I have to waste a keypress to pick up and hit Numpad-5 to shift back into User Orthogonal.
It seems to minor, but I firmly believe it adds up to hundreds of wasted keypresses per session, and while only slight, the visual, mental, and physical interruption to my work flow adds up, by virtue of the frequency of having to make this adjustment, to a major workflow impediment and over the course of a month long project, as silly as it sounds, wasted hours, one second at a time, of me shifting the view, getting my bearings in perspective mode, pressing numpad-5 to switch to orthogonal, and regaining my bearings a second time. Studies show that one of the largest detriments to productivity is being momentarily distracted and that even while it may only take a few short moments to regain orientation, it can actually take several minutes before you regain the level of concentration that you had prior to the distraction.
TL;DR: When using middle-mouse to rotate the viewport out of Directional Orthogonal (Numpad-1,3,7,9), how can I make Blender DEFAULT to User Orthogonal, rather than User Perspective, without pressing Numpad-5?