Maybe it's a spoiler, but there were a TON of easter eggs for MLP: FiM. That was the only part that made me a tiny bit sad because here we're seeing the remnants of all our favorite ponies, and the future ponies have no idea who they were or what used to be. Everything that was G4 is reduced to a few posters and legends. Kinda sad. Gives kind of a post-apocalyptic feel to things.
If they really wanted this to take place in the same verse as G4, they should have leaned into it more and gave it a bigger reason for being there. What if, when Sunny figures out the crystals don't work on their own, she consults with her little Twilight Sparkle and friends figures and begs them for answers out of desperation. Maybe their existence could trigger some kind of clue, some spark, that makes everything clear to Sunny. Or maybe, she could stumble upon the last remaining journal entry from Twilight's era, with Twilight describing her first adventure with her friends and Nightmare Moon, and Sunny realizes what she needs to do. Her just finding the final crystal in her house feels super shallow, and makes the message so meaningless? It makes her figuring out the moral kind of come out of nowhere. idk I'm seeing a lot of missed opportunity here. I'm def gonna give the tv show a fair shake when it comes out, but I really hope they add a little more love to it.