Nice! To me this is a small but meaningful differentiator for OpenBSD. It is similar to the "random" feature in my favorite cron, fcron: http://fcron.free.fr/doc/en/fcrontab.5.html#FCRONTAB.5.RANDO....

In crons that do not support something like this, you can introduce a random delay with a Perl oneliner. For example,

  # Start within the first 10 minutes of a matching hour.
  0 */8 * * * perl -e 'sleep rand 10*60' && ~/.config/jobs/fetch-tcl-logs