I feel like they didn't really understand the primary issue. It's not that we have too little space to carry things with us, it's that we have too little space in general. As far as I understand retainer information is only loaded when they are summoned, so a third free retainer would have been better than more bag space which takes up active server memory. Like, why? The worst part is that a lot of that new bag space will be wasted because no one carries around so many belts, earrings, necklaces and bracelets. Doubling the size of the ring and weapon slots would have made more sense.