I understand that you feel ghettoized, but I guarantee Blizzard doesn't intend to make you feel that way. From their point of view, they care a lot about roleplayers and want us to be happy just like everyone else. It's just that they have a limited amount of time and energy (not limited money though), with which to improve things for us.

The issue about policing RP realms isn't just one of not having enough GMs, or the GMs somehow not being good at their jobs. It's that not all "roleplayers" want to immerse themselves in their roleplaying. Some just want to play and goof around -- they enjoy RP, but by no means is it something they try to do in every single activity in the game.

Just as shown in Chris' repost of Noblesteel's words a couple comments down, there are all kinds of RPers out there, and sometimes their needs come into conflict with one another. It's not really the GMs job to sort it out for us -- we have to do that on our own.

That said, there are plenty of people on RP servers who for some reason like to harrass roleplayers. It's oddly antisocial behavior (to show up in a certain space just to harrass the people for whom that space was created in the first place -- that's like going to a wedding in order to pronounce that marriage is for noobs). Such people do get a slap on the wrist from GMs if we report them, though they may not get the sort of permaban or forced transfer you might be hoping for (just like the wedding crasher will get escorted out of the wedding venue but probably not sent to jail).