Way back before the game came out there was a lot of talk of instancing players by their prefered playstyle. Having people fill out a little survey about whether they want to RP/raid/PvE/etc. so that like minded players would be playing with like minded players. I personally loved and was really looking forward to this feature.
As far as I'm aware, it didn't make it into launch, did it? Or is it somewhere where I'm not seeing it? And if it's not in, has there been anything said about it since 2012? It feels like this would fix (or at least help) a lot of the grouping and harassment problems people have been having.