We have quite a few questions about the various "power saving mode" features in different phones. Some of them are about the feature in base Android available since Marshmallow or so. Others are about the "ultra power saving mode" that seems to be a Samsung-specific features. The existing questions seem to be mostly tagged with power, battery-life, or (erroneously) with power-options.
Should we add a new power-saving-mode tag? This would be specifically for questions about (problems with) that mode, whether they relate to battery life or not. And if so, should we add ultra-power-saving-mode for the problems specific to this feature (which is slightly different)?