Storm of Chaos was easily one of the highest points of Fantasy for me. My whole area mobilized to take part. There was extensive planning on which sites we'd defend, where we'd fall back to, the cooperative fluff writing, etc. I am still disapointed they rolled it back, because I thought the aftermath could have been a fascinating thing to explore. AND put the Order alliance on the aggressive fighting to reclaim the north.
The retcon is actually what finally pushed my group into making our own homebrew setting and just putting everything we play/do into that. Storm of Chaos is also the "event" that broke the old world and helped create the new one for us,