graphviz svg output can be (with some tricks) CSS-styled + JS-animated, so the sky is the limit w.r.t. how fancy you want to make you DOT graphs, and their elements.
Limit of what exactly? I've made much bigger than 50 nodes SVG-graphs using GV, and styled them with probably 50+ CSS styles and animated more than 50 nodes.
sorry...I do language development sometimes and GV (dot) has been a godsend for debugging. but at a certain size it just goes sideways and stops being useful and is more of a distraction. to be fair I think this more of a fundamental problem about visual understanding than some screwup in GV
