First of all, I actually really appreciate Millar's constant nods at Marvel's 60s era. The average writer would probably dismiss the more outlandish and campier concepts and storylines that took place during that time, but Millar decides to make them believable within a more realistic and modern setting.
In this issue, I actually like the Fantastic Five-Oh, but I agree that it was bit too much of a deus ex machina and a very radical invention that would bother those who were used to Ellis' writing. Still it would be something that someone with the brains of Reed Richards would do, and the explanation that Reed probably has superhuman intelligence by now would be perfect for Millar and any other writer's plans to have Reed build crazier devices in the future.
The scene with the half-naked Mary Storm was hilarious especially Franklin's reaction. I wished Sue had her own reaction though, that would be more interesting. For those who were bashing Reed's helmet's abilities without reading the book, please take note that the device actually burned through all the power within the Eastern seaboard and Franklin had to shut the system down before it would induce nuclear meltdowns. Definitely not a device that could be used everyday. I would also like to take note that it was good that Millar referenced the X-Men and the Ultimates, in order to add credibility about why no one else is trying to save New York from another full-scale threat.
My complaints include the lack of transition between certain parts, but even more the relationship between Mary and Sue. We know they were better by the end, but we're not exactly sure how it got there. Sure we eventually find out that Mary Storm actually loves her children contrary to how she appears in the first issue, but only Franklin really knew. Sue and the others were busy trying to stop Namor. Namor ripping off Persephone from the Matrix was also a cop-out, since one begs to wonder why didn't he just try to kidnap Sue and kill the others. Perhaps he was actually close to defeat but wanted the recuperate and used his water monster bit as his doomsday weapon to keep the others off his back and still get some sweet Sue sugar? Liked the ending though. I was surprised by the Doctor Doom comment since we never knew Van Damme referred to himself by that name, but it is perhaps a slip-up from a mind-controlled Mary Storm.