I would love for there to be a new mode, aside from Design and FigJam for a proper Diagramming tool, similar to Draw.io but better and within a single software. Currently I use Draw.io for UI designs, and Draw.io for UML/Design Diagrams. These become very complex, so do not suggest we use FigJam which in comparison to Draw.io, is a child’s toy.
Would love to see what Figma cooks up for this sort of tool, as I really like your design ethos in general. Draw.io has a number of issues which I’m sure you could resolve.