There is currently a customization tag which has 112 questions and a tag wiki excerpt of:
Modifying the default state of an application to suit a user's preferences or to address the unique requirements of a particular objective.
Is it needed, or does having a tag for the spatial library used in that customization (e.g. arcpy, pyqgis, openlayers, arcobjects, etc) make it superfluous, and a candidate for burnination?
Also, ArcMap has a Customize Mode that is GUI rather than code driven, and I think that and equivalents in other software should be part of this discussion.