Thank you for the feedback and your suggestion! A (partial) correlation network with Cytoscape.js is planned as one of my next experiments. A former colleague nudged me in that direction just a few days ago, and now you as well, so I'll probably have to build that next.
Currently trying to better contextualize the visible subregion of the matrix in relation to the full dataset (beyond what the current minimap does).
https://cybernetic.dev/matrix