The poor implementation of PVP rewards killed world PVP before BGs did. Hillsbrad was awesome before rank zoomers came about.
The rest of the post is trash. BC brought the best raids in wow’s history (Karazhan, ZA, Sunwell) and heroic dungeons remained relevant for a very long time. Arenas were better than BG reliance and EOTS was a great BG. Flying was convenience but implemented properly because the Netherwing and really Ogri’la were more content released by Flying.