The tag alias #72304 medium_breasts -> breasts is pending approval.
Reason: We do not separately tag anatomical feature size for average/medium/middle/center/normal/regular/normative/standard/things between small & big,short & long, thin & thick, micro & macro, eta... the root feature tag(breasts in this alias case) serves the purpose of covering 'medium' sized.
Also medium_breasts tag still relies on arbitrary cup sizes, and color or line styles are not proper descriptors. What this tag seeks to cover is better reserved to sets.
Additionally, users supposibly being lazy and just not tagging the size at all is not a legitimate reason for making a tag that covers things between small & big, we do not do that for other bodyparts, I maintain that there is no reason for this exception and the wiki does not justify its existence.
Simply not wanting your work to go to waste is also not legitimate reason for keeping a tag.
I will add other medium size tags are regularly cleared out by staff or privileged users.
This was prior discussion on the tag topic #25334