6) Finn
You might recall that in the big climax of The Force Awakens, Finn managed to hold his own for a short while in a lightsaber battle with Kylo Ren. Many fans were surprised by this since Ren is a well-trained Force-user and Finn was a rookie Stormtrooper not so long ago. This has led some to believe that he has latent Force powers which could be harnessed in future movies. So, perhaps he joins Luke and Rey in their new fledgling order of Jedi?
This is a possibility, as the idea of Finn going from a lowly Imperial soldier to becoming a Jedi Knight would be a fascinating and transformative character arc for him to have. However, there are other ways to explain his skill with a lightsaber, such as his Stormtrooper training with weaponry.
Besides, we all know that the future we really want for Finn is for him to get together with Poe Dameron. If that doesn’t happen, half the internet is going to be very disappointed.