Can you tell the field display weights of all your entities with one command? Or edit a node through the command-line?

drush --yaml entity-type-read node --fields=**/display/**/weight --include-fieldapi
drush entity-update node 12 --json

Watch the video on http://www.youtube.com/watch?v=cVGZzWjdDh8 and get convinced you want to know more of these entity internals.