It's too big a money-grab for them. In XI additional characters, which we all used as 'mules', cost a buck. We can't use additional characters that way here, but they gave us 'additional retainers' at double the price. And people pay it! I came really close this weekend to adding a few until I remembered they were 2 bucks a piece, not one. 2 additional dollars to have something that really ought to exist in the game (expanded inventory). If you have been playing since launch, and played a variety of content, that's a lot of stuff maybe you don't want to get rid of\sell.
And it's unique to this game, despite the Ps2 limitations, those guys in XI were constantly coming up with clever new ways to expand our inventory. I wish this team had some of that spirit - you know, where the player experience came first and the dollars naturally followed.