Something similar to the green bar that fills from left to right, when performing a search in Windows Explorer.
It would also be a very convenient feature in Beyond Australis' location mini bar, making the mini-bar stay present until the page finishes loading.
You can use Status-4-Evar for that, it should work perfectly fine with Beyond Australis, so there's no need to add extra features to the add-on, unless you can't use that one for some reason.
Something similar to the green bar that fills from left to right, when performing a search in Windows Explorer. It would also be a very convenient feature in Beyond Australis' location mini bar, making the mini-bar stay present until the page finishes loading.