Based on extensive discussion on G2G and in the Categorization Project group, there is broad consensus that we do not need the Zodiac categories on WikiTree, and they will soon be removed. Please do not add Zodiac categories to profiles.
The focus for inclusion of material on profiles is the individual himself or herself. If George Notable was himself fascinated with Zodiac signs, and attributed his success in battle to his nature as a Scorpio, by all means include that in the biography! If you yourself believe that signs of the zodiac make a difference in peoples' behavior and success, you are not alone, there are others who believe the same thing. This is one reason we have free-space profiles -- you can write up your own research demonstrating that Pisces like myself tend to be wordy and confusing -- fishy, as it were -- but at least we're not crabby like the Cancers.....