While not a big deal, the rstats command was nice.  It went away after the GPL -> BSD conversion.

It worked like so (which should be enough for a clean room reimplementation):

<verbatim>
$ fossil help rstats
Usage: fossil rstats

Deliver a report of the repository statistics for the
current checkout.

$ fossil rstats
 Number of Artifacts: 7691
  2251 full text + 5440 delta blobs
 41348 bytes average, 318009144 bytes total

  Number Of Checkins: 1811
     Number Of Files: 362
Number Of Wiki Pages: 20
   Number Of Tickets: 494
 Duration Of Project: 1123 days
</verbatim>

It would be nice to have it back.