Anyone have UIv2 experience yet?

If you're looking to use a client-side script to gather data and reformat as bbcode or wiki text, etc., take a look at http://api.jquery.com/ajaxComplete/. What you'll need to do is implement a universal "incoming data" handler to identify and optionally parse/present/share whatever has been dynamically fetched by the stock UI.  I think you'll need to attach the handler to document.body, but don't recall.  I haven't gone beyond a barebones proof-of-concept yet myself, since for HarmlessButler 2.0 I'm currently far more concerned with the extra UI templating, town/player/alliance data lookup and caching, and various other subsystems.  Info scraping is a way off for me yet.

It's the latter, but much of the data I need to populate my UI extensions doesn't need scraped from dynamic content.  For example, player id, time offset, and building information on the current city are all available as raw javascript--relevant variables for generating navigational links are PlayerId, CurrentTown (id), buildings (complex array), and OffsetTime (in milliseconds).  And the player name and town list (with ids, names and coordinates) are available in the base html--logout link and town select dropdown.  (The QA tester in me wonders how/whether that updates when a settler lands or town is captured and the page not fully reloaded).

If you're familiar with the original HarmlessButler, you may have noticed both addition of new UI elements (sidebar, nav menus) and also alteration of the existing ones (bigger links in context menus, new tooltip system, etc.)  Much of what I have to do doesn't really require reading any original information at all, but simply adding more (such as more html content and css rules that impact both the new and the old).

On the other hand, I want players to be able to read email without constantly switching between email and list, and launch troops/diplos without switching between map and launch pages.  For these, I intend to duplicate the map/email list contents wholesale in the form of a side panel showing "whatever map view/email listing you visited last" complete with the associated context menus etc.  And of course plenty of other examples abound.  There's hardly anything that can be fetched and isn't useful for enhancing something else, and I'm all about showing aggregate/overview information, as well as highly contextualized content.  (Example: looking at info telling of a scout returning to town x: send resources to x from here; or bring resources here from x; or view that scout's report; or send troops from here to where that scout went; or show the player list and summarize city count and total population for the alliance whose player's town occupied the spot that diplo scouted; etc...)