Sailfish Maps admittedly has one nice feature where you can add a picture to your saved locations. Perhaps that's the killer feature that would make everyone switch to Pure Maps.
While I admit that would be a nice addition to Pure Maps, sailfish-maps is obligatory for the "Show on map"-button for addresses in Contacts to work. Find a way for that button to open addresses in Pure Maps and I'll stop pulling the latest version of sailfish-maps from my Jolla 1 after every update...