It would be really nice if blender had the ability to highlight in red faces that aren't 3 or 4 sided (An "ngon highlight" view in the viewport overlays section.)
I'm sure I could make that pretty easily, but want to know if others feel like it would be useful. Right now, I'm manually selecting all N-Gons and then assigning them to a group, but it would be much more efficient for there to be a way to automatically highlight ngon faces.