Allow a default setting to show details in the email recipient field
In the new version of Outlook for Mac, the email header fields are condensed and you see the list of recipients as a list. In order to see who the email was sent to, you have to click "Show Details". I have yet to find where I can set it to "Show Details" as default.
I feel that most people in a professional setting will want to know whether the email they are reading was intended for them or if they are just copied. If it's an option for default, those who don't need that detail can still have the condensed version.
I work on a team and I need to see these fields for each of the emails I receive. This new feature has made reading emails extremely inefficient because now I have an extra step to click for each email received.