Snip
And this is why we have hammer space. Because it is better to have an unexplainable back of infinite dimensions than not be able to go home with your hard earned loot.
I wouldn't be opposed to designating the majority of loot as a "stash" and then contracting with a company (traders or mercs or through a bank) or renting/purchasing some means of cargo transport to deliver your finds to storage. Access to your loot can be made at anytime by visiting the warehouse or bank in which it is housed.
Of course, this system relies on a much deeper banking system. I am imagining bartering being carried out primarily on paper. You transfer ownership of items in your possession to the buyer. So, while you could still sell items you are carrying on hand, most would be simply signed agreements with bank and buyer making the physical trade after the fact. That is, upon sale, the item would disappear from your storage and the agreed upon sum would be transferred into your bank account.
I think this would offer some nice differences in gameplay terms as well. You can play the wandering ranger, living off the wild, but you won't be very rich. Ever. And that's simply because you lack the logistical ability to make large sums off of your expeditions. You would be forced to be choosy about what you take, leaving the mundane and taking only the lightest most valuable finds.
On the other hand, to make it big as a trade baron, you will need to manage the transport of your goods. By far the most efficient method is hiring a company to transfer your loot, but it is more expensive and you will be forced to pay a certain percentage of your loot's value. You can opt to use a horse-drawn cart, but it has a limit on it's capacity just like your character, and so may take multiple trips. Only in this position would you be able to sell common, mundane items like wooden spoons as youd be the only one with the quantity for any sale to be worthwhile (common items only having value if sold in bulk being the idea).
Basically, I'd like to see a lot less inventory clutter, but I don't want to eliminate the aspect of treasure hunting.