So this reminds me of an idea I had a couple of weeks ago which might take care of this in a more acceptable way:
Every character should have an in game description which the player can write. Say up to 500 characters of text which shows up under Personal Information. Then underneath each message, in addition to the link to see User Details there could also be a link to see Character Details.
This would allow people to flesh out their character in game with a description or background or whatever which other characters could view in game without making it something massively obtrusive in messages. It would also add another something to the knight game so that there's more stuff to do immediately on character creation.
In terms of functionality it would just be a text box with an editor, so it should be an easy feature to implement, but it would add a bit more roleplaying depth to the game in the way that the OP is after but without being too convoluted and requiring people to create a wiki page for each character.
