The one complaint I really have about this event (at least from a personal perspective, I can fully appreciate the complaints of the people who ended up locked out by full servers and didn't get to see stuff, etc) is the lack of a clear timetable. not only in regards to the three week phase one, then two and three happening in two hours, but with regards to the end of the event and the removal of otherworldly sourcestone drops and the like being....well...very abrupt and not really something players were informed about, at least by in game means.
I don't honestly know if this was mentioned in a forum thread anywhere, but frankly I don't monitor every forum thread and dev post about the event, and should not have to in order to be given a basic schedule.
I'm currently sitting at 99/100 otherworldly sourcestone that I need to purchase the scarab, which is the last event item I don't have. While not in the scheme of things a big deal, 99/100 does kinda suck. Had I been told on any kind of schedule that the event drops would close today, and not simply that the last 250 sourcestone would be mailed out "sometime this week" I would have found and killed another death invasion or death rift last night before going to bed. It seems unreasonable to close the event in such an abrupt fashion without really giving players a timetable to plan around. I hope Trion re-evaluates this decision as thoughtfully as they have some of the other problems this event had.