I just came back from a three year break myself, leaving shortly after wrath, it's interesting, the community hasn't changed a bit, from what I see there are a lot more twinks that aren't the greatest, nothing wrong with that. Things have change when it comes to the PVP itself, there are some changes to the terrain in WSG, i personally dislike them quite a bit. You can turn off XP, and that negated a huge part of what twinking has always been, there is no longer that feeling of just making it, or planning meticulously to not level. Most the work is done on your main now because of BoA's which i also greatly dislike. It's still fun, the games are more balanced, as always there is a surplus of rogues and hunters. It doesn't appear as though there are as many premade's that their once was. Over all it's still enjoyable and what i'm going to dedicate most my time on WoW too. Welcome back.