True. The entire goal of the tie ins is to show you that the Blackest night is a huge event happening everywhere. Though, they are all the same. Like Manjaro said, loved ones return from the grave and plague the living. Then they find a way to stop them. The first two tie ins were good (Superman and Batman). Now with WW, Titans, JLA, JSA, and soon to be even more, it's going to be the same. Hopefully, they keep it fresh.
It seems as if the only issues that are good are the main ones. They are the only ones moving forward.
GL
GLC
BN
That's all. The tie-ins just show you how big the attack is.