When looking at my Friends list, I have little to no use for sorting by the date the player joined Chess.com (possibly remove) ... but I would love to see a sort option by the date they became my friend.  

Some friends are possibly from a long time ago and are no longer my "friend" ... we just don't play each other any more... maybe our ratings have become too far apart.  So when I get new friends, many are closer to my rating "now" and would like to be able to challange the more recently added friends, as their ratings would be closer to mine.

As a programmer myself, I'm sure this would be an easy one to add as an additional option on the sort drop-down.

Art Mendenhall (tie_died61)

Well my friend we just played a couple of games in a tournament in which you did quite well! I hope we can continue to challenge each other.

Or, if sorting is too taxing, an option to View All Friends would make it easy to sort the list outside chess.com (using the Friends for field).