I wonder if (beyond making sure there are actually things in the bookshelves), design-wise, it would be desirable to just make less containers lootable? I know the option already exists, because there are numerous barrels and crates that cannot be looted in the game. That would help cut down on the amount of time spent clicking through containers. One of my least favorite things so far is opening 20 different crates in a room and maybe finding some plates and a potato.
