that's a really cool idea! i wonder if it would break the ui though? i should try that.
me, mainly i just look for the most beautiful monospace font i can find that has a nostalgic feel. recently my favourite has been "modeseven" (https://online-fonts.com/fonts/modeseven), which is also featured in the screenshot on the github page.
It does break the border, but that's a two-line fix in ui.py to use a Rich Panel without side borders:
Then running lue in an emacs ansi-term or mlterm with a variable-width font configured, it looks like a typical ePub reader.fantastic! good to know.