my 2c
Seeing as this Doc is from ICAO, and those of us living & operating under ICAO rules only have 3 weight categories, it makes sense that extra consideration should be given to any aircraft following an A380 - especially on final approach.
The A380's aerofoils generate some very powerful vortices at slow speeds & dirty configuration, just the way it will be in the intermediate and final approach phases.
Sure, it's hassle. It's not as expeditious as it could be. Aircraft will encounter delays. But at least we will maintain a safe environment until the system adapts to the A380's requirments. And soon, following extensive studys and research, the separation standards will be revised downwards, and it will no longer be hassle. It will just be the way it is.