I think that "Figma/Excalidraw-like" canvas for <insert interesting problem domain here> is an underrated solution space. At least in terms of variation on the problem domain.
no, it is overrated. there are many many canvas workflow builders like this one. they're all beautiful, intuitive and easy to use. they all also dont get traction. go ahead, name one that everyone else here will know. its weird but theres a huge gulf here between what people think they want and what people really use outside the figma/excalidraw/tldraw/miro/canva space