This has been on my mind since I started FREDding at all, but didn't post about it until now. Encouraged by Droid's "modding sucks - a realizatiön" thread, here is a pet peeve of mine that's been present since retail FRED.
Is it possible to making manually moving mission events up and down safe? If you use the click-and-drag to move a mission event up and down, is-event-trues/falses and some arrival/departure cues get confused. Sometimes you only have to remove two parentheses, but more often than not is-event-true "Event 1" becomes is-event-true "Event 82" for no reason and you won't notice it unless you start seeing some weird mission behavior and track down these oddities to a is-event-true that suddenly started to reference a completely unrelated event.