This feature has made it to the Top 10 on User Voice, which hopefully gets it some priority; especially since half of the top 10 are already COMPLETE. If you haven't voted for this yet, vote here: https://outlook.uservoice.com/forums/293343-outlook-for-mac/suggestions/8083083-integrate-outlook-with-onenote
1. Support for Google (Gmail) calendars. 23,235 votes
COMPLETED · Mac Outlook Team (Admin, Outlook.com) responded
2. Add delay send to the mac version of outlook, very disappointed that it is not already there. 15,017 votes
COMPLETED · Mac Outlook Team (Admin, Outlook.com) responded
3. Support for Google (Gmail) contacts. 11,855 votes
COMPLETED · Mac Outlook Team (Admin, Outlook.com) responded
4. Add "Recall this message" function and support message recalls from Windows clients. 10,517 votes
5. To-Do Bar (Have calendar and task pane in Mail view) 10,298votes
6. Add read receipt feature to outlook for Mac 2016. 8,570 votes
COMPLETED · Mac Outlook Team (Admin, Outlook.com) responded
7. Support for Apple iCloud calendar. 8,512 votes
8. Add Outlook to Share Menu (Extensions) 6,890 votes
9. Dark Mode. 5,660 votes
COMPLETED · Mac Outlook Team (Admin, Outlook.com) responded
10. Integrate Outlook with Onenote. 5,586 votes
WORKING ON IT · Mac Outlook Team (Admin, Outlook.com)responded