It's just fun, man. A big bombastic wide screen Star Wars space battle that just celebrates the idea of being here. The stakes with the bad guy are set, and we've seen how powerful and disruptive his weapon can be in #2, so the issue can just go. And good lord, Sook is an absolute BEAST.
Few things.
* Jon assuming (wrongly) that he could probably shut the whole thing down himself.
* More Gold Lanterns?
* The horraz leader having his men brace him to use the trident is a nice silent detail.
* So, Mon-El (like Jon) assumed he could end it all on his own due to his power. We still need to know how he and Jon are connected.
* Interesting that Mon assumed Jon would be "an arrogant pain in the ass."
* The imagine of Superboy and Mon-El circling the Earth and manually containing all the water in the world is freakin spectacular.