I love Jupyter notebooks I just wish they looked as good as observable notebooks[1], not just in the overall layout but the charts/graphs you could make in general (plotly, matplotlib, etc don't even come close to d3.js, Observable Plot, etc)... I don't know why there seems to be a hole in the Python ecosystem for good designers or something
This seems to be a step in the right direction with reactivity though. But it's not instant like Observable notebooks. But still good