While I appreciate all the hard work that has obviously gone into this effort, I must point out something with regard to the current user settings: it's concise!

Granted the nodelet pages are already on separate pages, however their seperation is fairly logical given their length, but some of the proposed pages are fairly short, eg Signature Settings, which has a mere two settings -- both of which would be expected in User Settings.

On the other hand, the current User Settings could stand for some reorganization, but I wouldn't advocate refractoring the content into new pages. I like to have access to all my settings in one place. However, as long as there's an option to use the old page, I commend your efforts and intent.

UPDATE: My principal concern is usability, while maintaining a clean, concise interface. I'm confident in pmdev's ability to implement these changes (and subsequent to this realization removed the statement regarding my preference for the existing page); however I'm curious what others would propose -- both for revising the existing User Settings in place, and for creating new settings pages.