Priority list:
1-9 as in Vim (9 = required for next release, 5 = would be nice, 1 = probably not)

ARCHITECTURE:
- Host docs on the website - is there even a documentation tool that
  can parse our source sensibly?

- unify the disgusting hodge podge of contract specification styles

BUGS:
- ;s saves the page rather than the image
- RC file is sourced once per window

FEATURES:
9 Add more tests.
9 clean up error message codes and document
9 option groups
9 global, window-local, tab-local, buffer-local, script-local groups
9 add [count] support to :b* and :tab* commands where missing
8 wherever possible: get rid of dialogs and ask console-like dialog questions
  or write error prompts directly on the webpage or with :echo()
8 add support for filename special characters such as %
8 :redir and 'verbosefile'
8 Add information to dactyl/HACKING file about testing and optimization
7 handle Print Preview 'mode' properly
7 describe-key command (prompt for a key and display its binding with documentation)
7 use ctrl-n/p in insert mode for word completion
7 make an option to disable session saving by default when you close Firefox
7 :grep support (needs location list)
6 :mksession
6 check/correct spellings in insert mode with some mappings
6 add more autocommands (TabClose, TabOpen, TabChanged etc)
6 Use ctrl-w+j/k/w to switch between sidebar, content, preview window
6 ;?<hint> should show more information
5 when looking at a zoomed out image (because it's large), zi should zoom in
  maybe with this? : http://mxr.mozilla.org/seamonkey/source/content/html/document/public/nsIImageDocument.idl
3 A format for 'guitablabel' and 'statusline'
3 add a command-line window (:help cmdline-window in Vim).
3 Splitting Windows with [:sp :vsp ctrl-w,s ctrl-w,v] and closing with [ctrl-w,q], moving with [ctrl-w,w or tab]
  have a look into the split browser extension