yes and that led me to a more fundamental question : is it even possible for an easy way to do fine grained adjustments. The finer granularity brings complexity. that makes it unreadable (especially for the untrained) and hence set aside and forgotten. The other way is to narrow down and focus on a well defined subset of problems.
either way the number of people willing or compelled to learn it will be tiny. and it hence becomes a niche, perfect for a long-term side project but with no real return.
my conclusion was to stop looking and use D3 or custom code ( good looking charts for humans).
this project is trying to do the same, balance verbosity in text with granularity in the charts with a narrowish usecase : agent consumption.