Speaking of profiles and workspaces, one of the things I love about Arc is the ease of switching between profiles in one swipe.
I have personal and work space, and personal and work profiles respectively.
And so I switch between those two contexts in one swipe of a sidebar, it's magical.

And when I open mini Arc window, I can then choose in which space do I want to open that window.
Orion has similar concepts, but UX of switching between saved windows / profiles could be improved to be as easy as in Arc.
For the people with vertical tabs, we could borrow idea from Arc: display small icons of the saved windows at the bottom of the sidebar, and allow switching between saved windows by either clicking on those icons or swiping the sidebar left or right.

For the people with horizontal tabs, we can see saved window title in the top left corner of the window - let us swipe that title left and right to switch between saved windows.

Also, regardless of the tab display settings, allow binding specific saved window to specific profile (might be a separate feature request, but it's still important). Example from Arc:
