Sleeping with the Girls

[deadpan29]

I'm re-reading the first chapter of the new book and I think I caught something I missed the first time. 

Then, when I finally hit a situation I can't cope with. I end up back in the safest world to date.

I had been thinking that the Nanoha universe represented the end point of the loop.  However, this suggests the patern may not be not one of, "go through this list of universes and go back to the begining when you hit the end," but instead may be, "go through this list of universes and go back to start if you get hurt too bad."  At this point it is just speculation from Hiro Protagonist, but there may be more universes on the list after Nanoha, along with the mystery universe between OMG and Nanoha where he just went back to sleep.
Edit: Also, the implications of Senbei going off with Mihoshi didn't really hit me durring my first reading.  That's [u][b][u][b][u][b]Senbei[/b][/u][/b][/u][/b][/u] and [b][u][b][u][b][u]Mihoshi[/u][/b][/u][/b][/u][/b] together on a spaceship without any supervision other than a stressed-out AI who has to follow Mihoshi's orders.  That should be worth a side-story all by itself.
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No, I don't believe the world has gone mad.  In order for it to go mad it would need to have been sane at some point.