One thing I miss, though, is ctags support for D. You don't know how powerful such a simple concept is; it lets you navigate 50,000-line source files without even batting an eyelid. :-) (Just try that in an IDE, and you'll soon get an aneurism from trying to scroll with a 1-pixel high scrollbar...)
There's a patch for ctags to support D. Works pretty well http://prowiki.org/wiki4d/wiki.cgi?EditorSupport/VimEditor
