Thoughts on Future State?

Personally, I see this event as the latest what the future of the DC Universe COULD look like scenario. Except this time, even though the DCU obviously won’t go down this path, they will keep characters introduced during this event for when they return to the present.

Now, I will probably pick up a few stories to read from this event. But if you have been keeping up, what are your thoughts on it? What are some of your favorite books regarding Future State?