And a bit more can be picked from this long topic, where I post a small announcement message as new features are implemented, explaining what they do. Occasionally, they come with short tutorials. https://forum.freecadweb.org/viewtopic.php?f=22&t=20698
I installed partomagic and deleted a part of a tree of a model and when I reopened it, the errors about
Object can only be in a single GeoFeatureGroup
Error in DatumLine: Property not found
were gone.
Seems like some of your speedups and reminders, (especially at exit) are helpful!