Good point. As long as she's playable, then I won't hate to worry anymore (unless she somehow becomes a low tier). If she is a secret character, I hope that one of if not the only way to unlock her is to do something with Pit or a Pit-related event match. It just feels fitting as it could be two of Pit's trials, then fighting her to unlock her is the third and final trial, as a reference to The Three Trials chapter.
And speaking of event matches, I wonder how different they'll be in each version if they're in due to different stages. I still think one of those events should be playing as Palutena with a Pit partner in a classic 2v2, where you must protect him while defeating villain opponents or something.