Personally, I wouldn't be too unhappy if they ditched the whole conceptual "find crappy loot, sell it, gradually buy better loot" mechanic. It's somewhat ludicrous in any case. What about this for an option: you get cash by GETTING CASH or by special loot finds like "ye olde dragon hoarde" that you get as part of an end-dungeon reckoning. Items can either be used or deconstructed on the spot, yielding some (stacking) crafting mats and cash that you get access to either by going to a crafting station or as the end-of-dungeon loot reckoning.
The general assumption would just be that you're piling up the stuff somewhere and grab it all when you finally leave the dungeon, you don't haul 14 halberds and 30 suits of armor around with you at all times. Inventory space could be EXTREMELY limited with this system so you can have that whole "management" thing people like--you have to decide what consumables to carry, what weapons to put in alt-weapon slots, stuff like that.
It could become an even more interesting system if they, say, allowed alt-slots for amulets and rings (which are small, so one person could easily carry several and switch them when appropriate). You could even have a mechanic where you can get more alt slots in various ways. Put stuff like resists, crit, armor piercing--stuff that's useful in a situational way--on the alt-slot items and now you've got an interesting gear mechanic going--but it's also one you can more or less ignore if you don't want to be bothered.
The "loot this or stash it" would be a button you hit when the loot interface comes up--there could also be a "loot all" and "stash all" button for convenience. When you leave a dungeon (or enter a town) you get a "loot reckoning" which lists all the cash you got and dumps that into your cash store, and also a list of all the items with a "trash these?" confirmation. So even if you make a mistake or you're not sure about X or Y item, you'll have a second chance to get it back.
Not that I in the least expect any of this sort of thing in this game, but it's an interesting thought.