Bumblebee is an odd Spotlight.
Art is not great, and inconsistent with the ongoing anyway. Prowl is nigh unidentifiable, the protectobots and other backing characters are very blurry/ill formed in most panels. I know art is not the be all and end all of an issue, but to be so jarring made it harder to get into this slow issue.
Lots of Thundercracker again, I must say I am getting tired of him, he could be used to a much greater purpose, he is truly becoming a one trick pony.
It's a decent hole filling catch up story that helps to explain (again) the holes and weirdness that was Chaos. Still no more clues on how Megatron got the technology, but it explains how the Cons got back to Cybertron from Earth.
Im not sold on this comic, it is far from good, but it does an okay job of being some back filler.
So far the return of these spotlights has been underwhelming, here is hoping that Trailbreakers can break out of the rut. Since it ties into MtMtE, it has a better chance than any! It is sad that Costa and Chaos did such a terrible job that at least 3 extra comics had to be made to help clear up the confusion... seems almost like a trend for IDW books until the last creative shakeup. 
-edit-
And why is half of Omega still on earth? Did he not have to transform to get into rocket mode to return to Cybertron?
Looking For: Wreckers Saga TPB Collection (with Requiem)