List of things that should be added at some point:
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+ X11 interface.

+ Forms editing package; use RE's to verify field contents.

+ Internationalization, including wide character support.

+ Make db, curses real libraries that we load against instead of
  compiling directly.

+ Add a ":resize =N" command, that sets the window to a specific
  size.

List of suggested features:
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+ Change tags to also attempt to find the file using the directory
  where it found the tags file.

+ Add versioning based on a "set version" variable, that would
  create backup copies when the file was written back, i.e. the
  ":w" and autowrite's would copy the original.

+ Add "set searchdir" for a list of directories to look in for
  files to edit.  The semantic is that ":e foo" is replaced with
  the file name that is found, so there's no confusion as to
  which file is written.

+ Change
	:di[splay] tags		-> :tags
	:di[splay] screens	-> :screens
	:di[splay] buffers	-> :buffers

+ A macro record function.  Add the ability to record a sequence
  of keystrokes into a named buffer for later use.  Handy when
  you're trying to build a semi-complex macro.

+ Put multiple messages on a single line if they fit in their entirety,
  so that ":n" with autowrite set doesn't force users to hit return to
  get see both the "written" and "new file status" messages.

+ The semantics of :split, :bg, and :fg aren't right.  Someone needs to
  rethink how they should interact.  The main problem arises when users
  want to get a window into a new file.  Currently, the necessary sequence
  is  ":split newfile|^W|:bg".  It would be nice if you could simply
  background the current screen and edit a new one.