Alls the can do for actual inventory space is add more sacks/satchels. But what would help i think would be allowing more things to be stored. Lets face it, in terms of equipment, next to nothing is AH acquired anymore. So its not like your killing that market.

But id like to see the items stored to not just expand, but go beyond equipment. Id also like to see more event stuff be storable. Lots of ppl don't bother with events because anything they get is viewed as inv-1. Also the various equip rewards from storylines. My storage in mh is full of those special items. I don't relay use them, but i don't wanna get rid of them either.