Backpacks {Can I have it?}
I think it'd be a neat addition in 2.0 to have equippable backpacks like in the opening CGI, which could either work like a gobbiebag, which grows as you level, something that stays static that you can upgrade via crafting, or a variety of bags that you can craft and obtain which either work solely as something which is just cosmetic, or something that can give an inventory buff of some sort.
Examples from the opening CGI I mentioned above:
http://i.imgur.com/UjlVk.jpg
http://i.imgur.com/Rq3BF.jpg
http://i.imgur.com/a0wj9.jpg
http://i.imgur.com/rEoxF.jpg
http://i.imgur.com/jhdqJ.jpg