User blog comment:Rappy 4187/Technical Update: December 7, 2015/@comment-24473195-20151209160356/@comment-24473195-20151210152512

"Depending on how you look at it not adding a type (or signature) is the error and what pops up is the error message telling you what you need to do (more interactive than the traditional error message). Solution -> add Error in big letters on the template type dialogue."

Frankly, signatures and talk pages are a result of a failed user interface design. A good interface should never ask for things that it can determine on its own, it should never assume the experience level of the user (a newbie may never know where to place a signature or what it is), and should prevent obvious "errors".

A signature is not needed for a talk page because the revision system and mediawiki always "knows" exactly what was changed and by who or what. More importantly, saving a talk page without it is not an error. It is a design choice.

Template classification on the other hand is a great tool and could use a more natural and unobstructive way to remind (or teach a user) a user to set a classification before saving the page.