I'm not going to lie - I was a little underwhelmed.
The issue certainly rocketed along at a cracking pace, but to the extent where the deaths of Galvatron and Fort Max just sort of happen and are done in a panel or two.
So does Rodimus from the main IDW-universe remember his little trip into Zero Space? And the others? And how did they get home if the crack closed? In fact, how did anyone get out if they closed it from the inside? Are they confining the dark energy monster to the zero space or to that universe which is now disconnected from the rest of the ultiverse?
Why deliver Rodimus the weapons to destroy you in the first place, monster? Why did you need a Matrix, monster?
It'll take a couple more readings, but it was a less than exciting outcome.