Which is precisely the packaging design that I'd like to see other studios using.
I'd like to see them get away from horizontally-outsized boxes, altogether, but yes, if they insist on using them, it's nice when, at the least, there's a regular case buried deep inside the treasure chest.
Myself, I would've happily paid $50 for all of the discs in a standard case or (especially) a Digibook. There's no way I'm buying that huge box, though, regardless of price and especially not at an $80 premium. It really pains me that I won't get all of the extras with my standard set, but I can get four fantastic Criterion releases for that price difference.