These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
They Changed It, Now It Sucks: The Trials of Atlantis expansion introduced master levels that had a host of repercussions in the PvP side of things, some of which are so despised that there are "Classic"-flavoured servers.