A few Quality of life improvements
The Ability to see Media Clips names on the timeline (i have to open the project in premiere??)
Vastly improved speed when it comes to zooming and moving the timeline, i would suggest that creating thumbnails and scanning the media files that make up the timeline is a background task, and the priority is the ability to play the clip the cursor is placed on.
It seems that the Microsoft Defender service is having a large impact on the performance of Rush. Especially with many files, whitelisting the Rush process and folders with content improved the performance by a large margin.