Single post in Missed Event Replay

Regardless of whether or not this suggestion is a "good idea", it is outright impossible. Some events have an explicit "end". An additional thing that happens at the end of an event's timespan. For instance, the very first event ended with users receiving a PM depending on their event progress - those who finished it outright would receive a heartwarming letter from Lunupine, Solynx and Kinaster. Sometimes it's a technical need, for instance this event will "end" with the removal of Clear Nectar from the game, as it was a temporary item needed to progress. Such specific "end" markers make it impossible to offer any kind of extension.