Consumable Endless Bags
I’m not sure I like this idea. But I understand the reasoning behind the idea and don’t object to a better solution than your idea. Is not 4 20 slot bags plus the big starter pack enough for a dungeon run? After all you can salvage the worthless white items, then send materials etc to collections and take a minute to check the rest to see what is worth listing on the TP. I know AC and CM both have venders just outside o the entrance so I’m not seeing this as an issue. Have an inventory clearing break like you would a bio break in the run. Problem solved no coding needed.