If the future is that we need to wait 5s every time a GNOME Gitlab page loads, maybe we should at least show something interesting - how about random tips or excerpts from the HIG?
"Never use the label 'OK' on a button"
"Margins should be multiples of 6px, e.g. 12, 18, 24"
"Button labels should use Title Case"
"Don't ask for confirmation when you could have undo instead"
and so on :)