Generation of bitcoin.conf, with properly restricted permissions
Run over 10 mins to check traffic average displays and RRD, and restart
Saving of window size, position, status bar, network units across restart
Full screen menu bar hiding, keyboard shortcuts, and WM sync
pyqtgraph mouse controls: left click panning, right click zooming, scroll wheel zooming, all of the above constrained to an axis, lower-left auto-zoom button, context menu
Graceful close on SIGINT (albeit up to 2 second delay)