Today I outdid myself with my QGIS mapping skills. I managed to create a viable GeoPDF (a PDF which is both georeferenced such that when reimported info a geospatial app, it gets appropriately aligned automatically, *and* which contains PDF layers that can be turned on and off depending on what you want to see). This didn't work when I tried it the other day and I don't know why (I assume I missed a checkbox or something; there are lots of settings). But now it looks *beautiful*!