First two episodes I think will involve Twilight handing over the power of the elements to the Young Six at some point (
https://youtu.be/Y8DvEJl4Hh0?t=66).
Also, Sombra (or perhaps Grogar) will hypnotize everyone but the Mane Six after the tree is destroyed. Twilight and her friends won't even need the elements to defeat Sombra after all (
https://youtu.be/fR8ZXSYtDSw?t=20).
With episode 3, I won't be surprised if they try to restore it, only to learn that they already had the magic inside them so it doesn't matter.
Interested in episode 4, although I have no speculations yet. Sounds like it could be a good episode.
I don't know, episode 5 sounds a bit silly (for this far in the series at least). Who loses their job because someone doesn't hand back their book? Did no one contact Twilight about it? Did she ignore/miss the messages? If it was that important, you wouldn't be allowed to take it out of the library in the first place. And Twilight's a princess - I imagine if she asked and explain they'd gladly reinstate her job. I feel like there will be a "yeah but here's a complicated reason why that won't work" conversation in this episode... So yeah, not excited for this one.