5 Miles,
if the glide slope gradient on an ILS is perfectly achievable for a B777
From what I hear, the problem is not
on the ILS but further back where energy needs to be dissipated. Heavies often get held up on our "9000ft until 36nm" step.
If you weren't to call visual until within my CTR then you'd likely already have been taken out for re-sequencing via an instrument app.
Would I be right in saying that you are either at a non-radar tower or not in Australia?