Since an overhaul of the TR cache doesn't seem to be coming anytime soon.. perhaps an empty TR cache button. You click the button, go afk, and when you come back it has filled your inventory with stuff until you run out of space, and then it stops. You make some room and finish clearing out the cache. This way it does the sloooooooow process of removing the items from the cache while you are using your time more productively.