As an end-user,
I want to load as little javascript as possible
So that downloading (the first time) and parsing the code does not slow down my page load.

This should be an occasion to introduce fellow developers to code-splitting with webpack and dynamic import [1].
Dynamic import is a Stage 3 proposal to let developers load code only when needed. In our case, it lets us load modals only when the user clicks on them, instead of having them always in the code.
Using this technique would reduce kanban's initial javascript size by about 200 KiB, principally due to d3js which is only ever used in the graphs modal.
The obvious targets for this technique are modals. Users do not always click on them, and for example in the Edit Kanban modal, most users do not have admin powers and so the modal button is hidden to them anyway !

[1] https://github.com/tc39/proposal-dynamic-import