To put my rather hesitant voice forward, I voted no.
I see the rp wiki as a place to find information on player characters that you're interested in. That's the main, large portion of it. Lore, major in-game characters and things that add to the overall story and place of Eorzea make up the rest of it. But the main point is - player characters.
When I peruse a character's page, I'm interested in that character. Their interests, appearance, personality, and yes, history. That does include non-playable characters like family members, or childhood friends or whomever. But I'm not that invested enough in those secondary characters that I feel they need an entire separate page of their own.
I understand that people like to write. That is one the main reasons we roleplay. To write and play these characters. I'm not trying or even suggesting how anyone should write or play, but their comes a time when an outside eye may be overwhelmed by too much information.