Look at EQ in terms of inventory slots... lots of customization and gear available to the player. Look at Anarchy Online... again, lots of customization. We have come a long way since these games. We can now animate a sword sheath, and we can place unique items on the avatar...but we don't. Why? Todd Howard commented in an interview that it's hard to tell what games are RPG's today because every game is doing some kind of upgrade, level, or reward for your play ( e.g battlefield 3). Let me tell you, it's not because shooters today are becoming more like RPG's. No, RPG's are becoming more like action/adventure games.
Game developers are going to do what they want or whatever their research shows them, so I am no expert or really care what happens in the end. If the game is fun, I'll play it. However, I am really curious to find out what it is that makes the inventories shrink. The physical representation of customization on the avatar is really a second thought isn't it? It would have been easy to give dual 1h sheath on skyrim but they didn't put it in the final product.. Yes, we modded that issue and, in fact, they had started to develop that part of the avatar, but stopped... WHY?
Really... It's funny to me that less customization... Less growth of how we represent the character's presence in the game by reducing how we make them feel about their avatar. If I was helping in designing this or any rpg game... I would want my character to look at his avatar, with his weapons on him, and his recently added pouch that increases his carrying capacity AND is shown on his avatar...His mount that has a new saddle... or maybe he didn't like his weapons on his hip, and he places them on his back... HIS/HER CHOICE... on how they look... how they carry their weapons and items... how many items they can equip...
Nothing ridiculous of course... I mean is reducing the item size have to do with how the game is balanced? That doesn't seem like something that would be too difficult to achieve.
Let's say I play a hunter.. I have swords and a bow and arrow... so why in MOST games does this character have his bow magically pop out of the sky and into his hands when the weapon is changed...MOST game companies will totally not care about this detail....Maybe most people don't care either, but I would say it would put a little RPG back into our adventure games... no?