I seem to recall there were a lot of complaints about that packaging here (not necessarily HTF), which was used for the original BTTF trilogy BD set. And I didn't like it either... though not too big deal since the DC discs aren't used more than just once. But would hate it -- probably more than the current book style ones -- for discs that would be accessed more than once. Plus they're also uglier on top.
I'm guessing Universal made this switch precisely because of the American uproar w/ that crappy, old digipack.
Not saying the current book style is great of course, but I'd rather have that than that particular digipack.
Haven't had quite too much problem w/ the book style ones so far at least from other studios like Sony -- I haven't bought any such from Universal yet. Maybe Universal just needs to learn from Sony?
But yeah, ideally, they'd go w/ better, more standard style cases unless it's really such a definitive, collector's set worthy of more (like some of Criterion's boxsets, eg. the giant Bergman set) -- there have been plenty of boxsets using good space-saving, standard format cases for a long while now.