The next Naruto should be fun, and the one after that even more fun. Madra is headed toward Obito, Gaara, Sakura and Naruto are headed there too. If Madara gets there first, all hope is lost. If Gaara gets there and Madara catches up, all hope is also lost. The Only hope is for Gaara to get there while Kakashi sends them to Obito's dimension before Madara blows them all away.
If this happens, Minato needs to go with Naruto. Sending Obito too might saboutage Madara a bit. What Will Happen next? Stay Tuned.