1. In some of the early promotional stuff and leaks I seen, Nighthawk's status isn't really clear. He seems to be mysteriously missing in some of the group Squadron Supreme action shots, but they do mention in one synopsis that he has formed a Squadron Supreme Europe (Which is interesting considering he's from Chicago, we'll see what the explanation for that is.).
In DC's Justice League (Let's face it, there some, um, similarities between the Justice League and Squadron Supreme, so it might be relevant), there were at one point sort of sub-groups that were affiliated with the Justice League and led by some of the members of the main team, who both led their own team and also participated in the classic or a variant of the classic team. For example, Batman led Justice League Dark with Constantine and some others, but also was on the regular Justice League team with Superman, Wonder Woman, The Flash, and Green Lantern (or a close variant).
On the other hand, Justice League of America sometimes has been in outright schism from the Justice League. There was a new52 arc where the two Justice Leagues actually fought each other. At other times, the Justice League of America has been working with the regular Justice League or has just been a name for a second comic book about the same main Justice League covered in the main title, just by a different author and illustrator with it's own story arc.
So, is Nighthawk still on the main Squadron Supreme team while he's doing whatever he's doing in Europe? Or has he split with Hyperion and the rest to the point where he is not going to be fighting next to them as a matter of course?
2. Alternate reality, but one of the more recent incarnations of the Squadron Supreme had a secret base at the bottom of the ocean. Do we know if this incarnation will have one yet?
3. Will we see Blur, the Whizzer, or both?
4. Any involvement from JMS on this?
5. What do you think the odds are of a Squadron Supreme monthly emerging from this after regular continuity is restored?