Spoilers ahead, as always.
I thought this was a pretty good issue, if not as good as last months. I was expecting something more from Supes secret identity than Johnny Clark, though it did make sense why he would choose a fireman as his secret identity, allowing him to be Superman all the time.
We got our first look at Susie this issue and how she ties in with the first Superman (who with his cometeer ship is almost certainly captain comet). I got to be honest, I groaned a little when he told Susie they were "nutents", along with the with the high sci-fi talk Adam dropped on everyone.
The whole magnitude thing seems to be coming back into play and I'm interested to see what it is. I also noticed quite a few call backs to All star in this issue which was cool to see.
The fill in art was pretty jarring. I like Rags art but he really needs to keep up.
The back up was nothing special.