I agree. I've put a lot of work into building these types of visualizations (Red Blob Games) and I've been able to come up with useful visualizations for only s

I agree. I've put a lot of work into building these types of visualizations (Red Blob Games) and I've been able to come up with useful visualizations for only some of the problems I work on, and for a small subset of the data structures. For example, with my A* pages I purposefully chose graphs that are planar and have at most a few hundred nodes, because that works well for the visualization. But if you were to ask me to make my A* visualizations work for any graph, including non-planar or millions of nodes, I wouldn't know how. I know some people want general purpose tools "for practioners" but I don't know how to get there, and years of making these visualizations has not gotten me any closer! :-( Maybe someone will come along and figure out a generalization, but I don't think it will be me. I think the "trailing wheels" style pages are a subset that clearly benefits from visualizations, so I'll focus on those.