@Listens to Baroque while coding murder.exe :newt: @Denpa mode :flag: :cute__i: @mangeurdenuage :gnu: :trisquel: 🌿 :abeshinzo: :ignutius: :descartes: :stargate: I don't know where to fit this in the thread.
Text scaling (not just zoom in/out),
dark/light theme,
jump to top/bottom buttons (only relevant for phones without Home/End key anyway),
table sorting by column
should be built-in browser features, not implemented by webmasters using JavaScript.

I can't think of a reason to have a web browser access USB devices.