Of course EGCC meets ICAO standards, that’s why it was approved; however that doesn't necessarily mean that it is very wise.
A two runway configuration that involves aircraft holding close to active landing runways especially when there are three holding points, (increasing the risk by a multiple of 3) on the north of 24R and a huge holding area to the south cannot be considered very wise.
Interestingly I understand that there has been no risk analysis of the layout just acceptance of ICAO criteria.
Finally as the guy at the sharp end I try to be risk averse; is that a crime, or are we in a different industry to the one that I joined?