I recently tried Orion, and I think it's great. However, I find that the UI design of Arc is better. Although Arc has been discontinued, I feel it was more complete and didn’t require additional features. Switching from Arc to Orion feels like moving from a colorful environment to a dull one. If there's a way to add a background shadow to the main window and highlight the current tab on the sidebar, that would be fantastic. Also, a way to give color to different spaces/profiles sidebar to differentiate it.
You'll get most of the arc users who love that UI.
