I wouldn't get so uptight about usernames and avatars. The aussie climbing scene is pretty small and I would say most people know each other behind the names. People hide their real names and email addresses to prevent spam.
I can't see why the guiding can't be done within the parameters of the established climbing, rather than modifying a popular climbing area to meet the needs of your guiding to the detriment of everyone else who climbs there (including bolting next to cracks, breaking flakes, retrobolting old classic trad lines, etc). This stuff could also endanger the relationship with park managers that has been built up over the years by climbers showing restraint.