DoctorWTF [@Ring Team](/forums/pony/topics/unpopular-opinion-time?post_id=5193059#post_5193059)
The only issue I had with "The Last Problem" was them stuffing the CMC in the school as teachers, abandoning all of the skills they had been developing when there was scant evidence that they'd have any interest in teaching full-time.
Plus with all the emphasis on non-ponies integrating into Equestria, a shot of Silverstream as a Wonderbolt would have fit beautifully there.
Apart from that, it was nice.