It would be great if the delete feature was syncronized for multiplayer games. The delete option could be limited to the host system and perhaps only allowed when the game is paused. The delete command on the host would be transmitted to each client and acknowledgement transmission received from each client before host deletion is completed.
This would simplify situations where deletions may be necessary and reduce chances of problems and potential bug reports where one or more cients either forgot to delete or accidentally deleted the wrong plane.