Support. I could be wrong, but maybe this is something that was missed when auctions were updated to stop this same action. Personally I wasn't keen on that fix because allowing an item to be added to a full inventory defeats the purpose of inventory limitations. However, I agree that items shouldn't just be deleted. I remember suggesting a warning + time limit to claim items that are in limbo, and I still stand by that. Just a little "Sorry, your inventory is too full for these items, but you have 48 hours to claim them" or something. I like your other ideas too.