I've been kickout out the possiblity of implementing some basic XForms or XForms-ish implementation for our UI, including for the extension & scripting support. Among other things, I think it would shift things around and get them more useable than just putting in .glade file and libglade parsing. It's a bit similar to XUL, but with a focus that I think is more appropriate for our needs.
Anyway, I came across this article that gives a quick overview of some things, and how it might benefit us. I think it would be good if everyone could at least skim it.
---------------------------------------- The Secret Life of XForms http://www.devx.com/xml/Article/17714/0/page/1
"XForms recently reached the W3C's Candidate Recommendation status—and you need to know about it—because XForms isn't a form description language, it's a language for describing applications in a platform-independent way. Best of all, it integrates easily with technologies you already know, such as XHTML, XPath, SVG, and CSS. " ----------------------------------------
Read it through, and then think of how this could be taking our 'verbs' approach a step further, and also give extensions and scripts a nice way to get and use UI without having to resort to the evils of Gtk::Socket and such.