As always a nice article.
One brief clarification, if you will
One does not see the types of striking techniques which exist in combat oriented martial arts targeting vital points. The use of these would produce serious injury and these competitors all know that if they utilize any techniques of that sort, these techniques will in turn be used against them. The same is true of joint oriented techniques as found in traditional jiu jutsu which are designed to destroy the joints, connective tissues and even limbs of an opponent.
What joint oriented techniques are you referring to? Off the top of my head, I cannot think of a single aikido joint technique that would not be allowed in the UFC (granted different organizations have different rules and all.....)