Maaaan, the resolution to Unicron had me teary-eyed. I was really skeptical of his rebooted origin, but him turning out to be a spoilers:
grieving father who needed to be talked down
end of spoilers really brought out the feels. Like, the last five years of IDW Transformers have been such good storytelling. They took such a big risk with ending the war, but the payoff has been such incredible nuance and humanity. It really proved that Transformers has the chops to stand with the big boys as a compelling science-fiction/fantasy franchise. The only thing that disappointed me was spoilers:
Prowl coming out on top...AGAIN.
end of spoilers I also wanted to see Rodimus acknowledged as a Prime.