I'm not sure what the state of relationship is between NPWS and climbers at Monkey Face, but I'm sure we can take actions to keep any negative attention away from the crag.
With this in mind, could I make a suggestion that we try and take more trash out than what we take in? I was out there today and noticed wrappers, empty cans, bits of climbing tape, etc. There's not a lot, but it's easier for us to prevent it getting trashed than it is to clean it up when it finally becomes worse than a teenager's bedroom.
I know it's not just us climbers that leave rubbish, but hopefully we can make an attempt to keep our activities out of the bad books by leaving the place cleaner than we found it.