You should operate under a couple assumptions:
* Making changes to anything outside /home is considered to be effective system-wide
* The computer, not individual users, is responsible for maintaining files outside /home; that's why root:root, not a user:group, owns the files
Trying to consolidate fonts, for example, across users and especially across differernt OSes is unwise. It's difficult to predict how your computer will behave, and all the effort required to test and alter permissions and symlinks isn't worth the miniscule amount of disk space saved.
* Making changes to anything outside /home is considered to be effective system-wide
* The computer, not individual users, is responsible for maintaining files outside /home; that's why root:root, not a user:group, owns the files
Trying to consolidate fonts, for example, across users and especially across differernt OSes is unwise. It's difficult to predict how your computer will behave, and all the effort required to test and alter permissions and symlinks isn't worth the miniscule amount of disk space saved.
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