So... It was cool, I guess.
I wasn't disappointed but as expected, it was an okay special. It has its moments from Sunset and Celestia reunion to Trixie's ego to the max, but it didn't really made itself to be spectacular.
The antagonist (who I forgot), was okay. She has believable intentions and fits the theme of the story, but I felt like they simplify her too much that she didn't really leave any impact on this special. And she didn't plan it through her scheme, making it hard to actually believe she really wanted Sunset to be out of the mane 6's life.
Overall, it was an okay special. Nothing to spectacular but it did made some moments shine. It's just that it felt too simplified and underwhelming at times.