Some good ideas you have.
I personally wish to see account bound blood roses. I've got quite a few on a character that doesn't need them and they're just stuck there 😕
And some time in the future I hope they implement a safer way for people to purchase f10 items from other players, like items or 90 days premium. As it is, "sellers" could just run off with your gold and not give you the requested item. So BnS could make it as part of the f10 system to create an in-store sale gold for the item you want, or even make the item sellable on f9 even. They could also make a gold limit on some sales so sellers can't milk or abuse with extreme prices.