I'd rather use a visual editor, but I've repeatedly turned to text-based diagram markup (mostly PlantUML) because I found the interactive tools to be painful to

I'd rather use a visual editor, but I've repeatedly turned to text-based diagram markup (mostly PlantUML) because I found the interactive tools to be painful to use. In most visual editors adding a new node takes lots of of mouse motions. In PlantUML it's pretty much just adding a line. Ideally I want a visual editor with an abstract understanding of what you can do in diagrams, a keyboard driven interface and automation of a good first approximation of what I want, giving me the ability to tweak the resulting layout. Drawing diagrams on a piece of paper or a whiteboard beats both approaches handily. Which is pretty sad.