Lost Its Magic

''But not like a magic wand suddenly not working. Not actual magic.''

When a franchise is no longer enjoyable after forgetting or abandoning what made it special when it was new. One of the terrible things about fiction aging is that it can lose what made it so lovable, leaving it as a hull of its former self, existing for almost no reason other being Purely For Profit or to have the audience remember the good old days of when everyone loved the franchise. Unfortunately, most times if this happens, it's not going to have its magic restored any time soon and, as a result, it'll become a Zombie Franchise. If the franchise can somehow regain some or, even more rarely, all of its former glory, that's the Return Of Magic. Losing Its Magic is very common with reboots. See the Reboot Curse for more info on this.

A way to keep a franchise from Losing Its Magic is by going out with a bang by making a final episode or installment that most properly ends the franchise by being filled with every ounce the creators' love, working on it so hard, making sure to buff out as many errors as possible, and giving the audience a masterpiece to truly enjoy as they see their favorite franchise say its goodbyes.