Pros:
Spoink shows up again for the second and obviously last episode
The Blue Pearl looks awesome! (Blue is my favorite color

)
The kids who Spoink victimized show up again to help, unlike the last time, when the kids who were victimized were just cameos
Seeing Spoink put a Wailmer on his head was priceless.
Cons
Team Rocket getting the Clamperl, but not having the sense to leave the island and going somewhere where they couldn't be found to do something with that Clamperl.
Meowth having that stupid Boss Fantasy again
Team Rocket getting blasted off again(not that I advocate them winning, but it's getting old)