On the 360, you have a roster just like the One. Let's say you have 3 full pages of friends playing destiny. 1 page = 12 friends, that's 36 friends online playing Destiny.
Now, you can inspect every friend on Destiny AND compare weapons for every single friend playing Destiny. Accessing 14 different items from each friend and comparing to your own. That's the potential of accessing 504 items and comparing to your own.
That's way more than what's in your vault. A paging mechanism would solve the vault issues. And I've just shown its possible through the old-gen.
-
Last gen is holding current gen console games back. It's the simple fact of the matter. Who knows how good Destiny would look, how much smoother it would play or even some new mechanics it would have if it was only current gen. While Bungie could do more with its given situation, I think Destiny would be a better game if it was only current gen.