I don't understand; are you complaining that there's not enough empty space in the box? On my way-too-crowded shelves, that is certainly a good thing.
In any case, I tend to store dice, card, and GM screen in the Intro Box when I'm traveling. Does that help?
There's two camps in this discussion.
The "Why is the box so small, I can't fit anything" camp.
They usually look at the box as a convenient storage box for all kinds of misc. items like dice and markers and even other items that might not be considered by most (like custom ID-cards for narrative one-shots etc.).
These are largely disappointed by the size of the latest Alien boxes.
The other camp is the "why are you complaining, the box takes up too much space in the book shelf already" camp.
They usually see the box as something unnecessary and would have been happier with just a book.
They're more happy with the new smaller size of the boxes, but wouldn't really care if the game came without any box at all.
I'm with the first camp.
And I think it's largely dependent on what you grew up with.
I grew up in the "golden age" of RPG's in Sweden. All the games came in boxes and we stored pretty much everything in the boxes.
To me it also looks better in the bookshelf than having books of various sizes and misc. items strewn all over the place.
Others who grew up with the "hardback" age where all the games came in hardbacks and are used to that, don't see the boxes as anything other than a nuisance.
Personally, I think that if they're gonna go for boxes, then don't go half-way.
There's no point to a box that holds nothing but the books. You could just as well just put the books in the bookshelf then.
I would like to see all the expansions have boxes the same size as the intro boxes. That way I don't have to mess about and switch things from box to box every time I want to bring the game somewhere.
I can have it all in the box I want. If I'm playing Destroyer of Worlds, I have the dice I need, I have the printouts I need, I have the props I need.
It's all in one easy package. But that's not possible with the current size of the Destroyer of Worlds box.
With the Intro box size, it would be possible.
But as it stands, I have to take out all the boxes and rummage through for what I need, and then put that stuff in the intro box (while also finding somewhere to put the stuff that's in the intro box that I don't need).
I'd prefer the bigger box.
Either that, or they might as well not bother with a box.