Each time when I start Outlook it opens on the main screen with a random size window. Ideally, I would love to see it in the exact same location and size as it was before I quit it e.g. fullscreen on the second monitor.
Thank you.

Some of us use Office 2019 provided by our employers, but are not currently on Office 365. Would like to be able to test new features and provide feedback.. even with Fast Insider channel, the updates for the new experience are not available.

Thanks.

Ful support for G-Suite accounts including resources (e.g. meeting rooms) when making appointments in the calendar.

You can no longer move Gmail mails to local folders (which was possible with the old version). The only folders that show up in the "Move->Choose Folder.." option are ones that are created within gmail.

If you wanted to create a folder within Gmail you can't - that option is greyed out.

Would like to be able to accept or deny approval emails for DL emails as I can in the browser or the Windows client. Most annoying as I need both the browser and Mac client open.

I'm on insiders fast, on Outlook version 16.33 (1911270) on Catalina 10.15.2, and there's no New Outlook switch, and the option isn't in "Help" either. If there conditions in which it's not available, that would have been good to know before updating to insiders fast.

This was lacking in the original Outlook for mac, but still think it needs to be done. I like placing the reading pane on the right. With the message list, I'd like to see the option of adding additional columns to quickly sort by. This is one of the features I use so heavily that I still find myself using Windows-based Outlook on mac.

Instead of breaking them by Today, Yesterday, Last Week etc, I would like to be able to them as a list with a proper Date column

The web client has the ability to style text as a quote, while the Windows client has the ability to add standard styles (Heading 1, Heading 2, etc.) which is similar to Windows/OSX version of Word.

It would be great to gain more style formatting options in this new Outlook for Mac.

I use flags not just for follow ups but to help categorize items. More colors would be helpful.

To prevent accidental message deletions, allow me to remove the Delete button that appears when hovering on messages in Inbox.

Ideally, I could customize which buttons appear when hovering using a dialog similar to the toolbar customization dialog.

When the mouse pointer hovers over a message header, action buttons (Delete, Archive and Flag) appear, making it very easy to click on these buttons by mistake while trying to select a message to read.
I believe the buttons are helpful, but it would be better if they were always visible and I would suggest either the far left or far right of the headers to place them.

It would be helpful to either completely move, or at least add a send button to the top bar when composing an email. When all of the actions except send are at the top it seems quite odd and confusing to have to go to the very bottom to actually send a message. Another idea is to possibly shrink the composure box so it isn't so far away.

favourite folder bar next to the toolbar

When viewing the Flagged email list, scrolling causes the scroll bar to appear and overlap the Flag icon making it easy to inadvertently click the scroll bar (causing you to scroll half way down the list) when you meant to Flag or Unflag an email.

Be able to reduce the whole window to a single pane view listing last 5 emails, next 3 calendar appointments, and month calendar view. Kind of like the right calendar strip with minimized emails at the top

Attachments, when saved to common user-facing folders (Downloads, Desktop, etc.), should have their permissions set to read and write (similar to current stable version of Outlook and most other email clients). Currently in "New" Outlook, when attachments are saved, saved, they have read-only permissions.

When I'm using more than one monitor and authoring a new email on the second monitor, the dropdown menu for quickly adding recently used email addresses (in the "To:" field) needs to display on the second monitor, as opposed to the primary monitor.