Hi Shawn,
I understand the concern. Based on current Outlook for Windows (new Outlook) functionality, there is currently no built-in option to display Inbox and Sent Items as separate side tabs like in classic Outlook.
Regarding feedback submission, you can also submit feedback via the Outlook (new) feedback portal, where you can suggest product enhancements and vote on existing ideas. This helps ensure the feedback is reviewed directly by the Outlook product team.
Once you've submitted your feedback, feel free to share the link here in the comments. I’ll be happy to upvote it to help bring more visibility.
I hope this helps clarify the available options. Let me know if you have any questions.