JOSM has some guidelines it follows when adding presets to the built-in list.
Of note:

  • New top-level presets must have an svg icon (if it is not area-only and can be put on points).
  • Proper documentation on the wiki (the wiki page for office=forestry is not great)
  • Decent usage numbers – from TagInfo, there are a bit under 2k usages. We do have a CI job that looks for documented tags with over 10k uses.
  • Worldwide use (from TagInfo, this does look to be the case)
  • Used by a reasonable number of mappers
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