@Nightlord1, do you know what was previously in the space where they stuffed the VLS?
To be honest, it varies from ship to ship. On Sydney, the only original Australian pattern, US built FFG upgraded, it was the Vault, man at arms store and a couple of other storerooms and some of the repair 2 flat and armoury.
On Darwin, it was just storerooms and the repair 2 flat, and Newcastle and Melbourne lost much the same as Sydney, except the vault, which is in a totally different place. Memories are hazy, since the last time I served on an un-upgraded FFG was 2006. :-P