Well I just had my first experience of Comprehensive Credit Card Reform almost biting me. I do have Credit Savvy but not the Equifax equivalent so checked there, total CC limits 62K. When I applied for an ANZ CC got a call saying that their pull of my credit file (presumably Equifax) showed I had limits of 87K. "Really, I had asked for that account to be closed". Fortunately even though she mumbled "that's a very high CC limit' when she updated in the system and we waited a couple of minutes I was approved.
I've been telling others this but guess its time I listened to my own advice, they do now have clear visibility of the other cards and limits you have. So for me time to start closing and/or reducing limits (Commbank Plat and my old fee-free Citi Signature first to go, that's 40K in one hit).