Someone just told me about Snapshots, and I don’t see Append or Update there either… 
There’s also no clear button to remove objects from either of these panels! I looked at the documentation page for Named Selections and I couldn’t even find how to remove an object from an existing named selection.
I get that Snapshots might be “more advanced” or that (some) users have to be more careful with that, but I think these things needs to be consistent and have just 1-step executions (right now, it takes 4-clicks to update a Snapshot):
- Creating a new selection/position/snapshot
- Switching active selection/position/snapshot
- Updating (save) active selection/position/snapshot
- Adding to active selection/position
- Removing from active selection/position
- EASILY SHOW WHICH SELECTION/POSITION/SNAPSHOT IS CURRENTLY ACTIVE
I shouldn’t have to learn four different sets of interactions for four very similar panels (Cplanes being the fourth).
EDIT: Added one last point with emphasis, because holy crap there’s literally no way to tell!?