Conclusion: You may notice that I disagree more often than I agree. Still, I'm an inclusionist and tend to look for mitigation rather than outright accepting retcons or even seeing them as retcons. To me personally, a retcon is a case of complete incompatability, with NO ROOM WHATSOEVER for compromise. And there aren't many cases of that.
Course there are other retcons, ranging from the minor (e.g. Korhal's destruction and population) to the major (e.g. the timeline retcon...ugh. Still got a sour taste in my mouth).