This is a feature in GS Pro that is incredibly useful for planning survey missions and is sorely missed in Pilot 2. Being able to import kml/kmz point files, turn them on and off at will as reference layers, and then draw a flight plan on top of them is far more flexible than only being able to import a kml/kmz polygon file once and having the mission planned for you.

DJI: Please consider adding this functionality to Pilot 2 given that GS Pro is being discontinued. Thanks!

Thank you for your feedback. We really appreciate the time and effort you have invested in providing this suggestion to us. Your feedback will be definitely cascaded to the concerned team for further review. Thank you for your valued support.

Have you tried the Pilot 2 MbTiles? I find the function much better than KML.

https://forum.dji.com/forum.php?mod=viewthread&tid=287050

Thanks LV_Forestry for that tip! It took a little trial and error but I was able to generate the MBTiles of my vector layer using QGIS and followed your steps for adding it to a project. The symbology of the points is a bit grainy in Pilot 2 for some reason but as I'm only using them as a reference it's not all that important.

QGIS documentation on the "Generate XYZ tiles" tool here:
https://docs.qgis.org/3.28/en/docs/user_manual/processing_algs/qgis/rastertools.html#generate-xyz-tiles-mbtiles