when @ person, option to show only name vice showing full organization and other fields
When typing @[name], the following is displayed in the message: last, first, title, organization all show.
Recommend default to only showing First and Last name (common usage) with the option to delete the last name. When anyone needs, they can hover over the name to get all of the fields.
When @ multiple people, should default to only first name (and maybe last initial if multiple people are in the team).