Having porter moogle accessible from inside the MH is not a definitive solution, but it's a nice compromise at least.
Correct if I'm wrong though, currently the FFXI Inventory is structured with this scheme

A + B

B is the normal player inventory and it can hold up to 120 items, 80 normal ones and 40 temporary ones.
A is a "dynamic" inventory and it can be any of many other repositories (Mog House, Storage, Mog Locker, Satchel, Sack etc).

My question is: shouldn't "A" be able to hold up to 120 items as well? But since there are no temporary items there, maybe we could get 120 slots for "real" items?
Also, two further questions for Mr. Akihiko Matsui:

Some of you guys almost promised you would have made "Storage" accessible from all Mog Houses and not just from your home town. Any plan to make that change happen?
And if adding a new Sack/Satchel item could be a problem when characters are zoning in and out, why not making it like the "Mog Locker" added in the ToAU expansion? I'm sure many of us would consider it a really acceptable compromise to have another 80 inventory spaces, even if you can access them only from your mog house.