I thing there are many improvents to be implemented for Orion Map, but below are few which are musthave, I think:
Orion Map needs to be displayed in the widget even if it has no Orion entity on the map. I'm using Orion maps as navigation pane with different graphical objects and I must use fake entity to have widget showing a map at dashboard. That is useful for switching to modern dashboards directly from website - not from another widget with links or menus.
Format painter - it would save much time to apply format from one object to few others without reformatting them one by one (example special icon/size/style for some special entities or square object size/color/style etc.). Would be very useful to have duplicate option for graphic object (pictures, rectangles, circles etc.).
Connect entities by lines without configuring interaces.
Vertical and horizontal alignment for entities and graphic objects.
Add custom color to palette of colors (for style, boarders etc.) permanently.