Mystery of the Emblem and Binding Blade both had the player go through a few extra hoops to get to the true conclusion of their stories. These amounted to game long collectathons in practice, some would say.
Did any other games have this mechanic? Should other games have this concept? Did you personally enjoy the extra challenge or is it just another thing you don't want to have to worry about?
For my money, I think Fates would have been better if that was how it was handled. Birthright and Conquest would have extra challenges players would have to overcome to reach a true conclusion with Anankos and happier endings overall. Revelations could still have been kept as a shorter, straight to the source, here's all your units campaign.