ok, so, i looked finally at the code for this (I got a head injury last Saturday) and Pi-C refactored the warnings on 1.1.10 so that you can go to Player settings tab and disable the warnings printed.
it'll just store the list forever and, when entities die, it will attempt to insert whatever it can into the chest that had accumulated since the last time.
i've done this on a test map. you can disable the warning, and eliminate a whole 50,000 enemies, and the chest will just silently keep adding and unloading items.
there's a downside to this approach, since we're not using on_tick handler to find if there's room in the chest (to save CPU), if you don't have entities dying, the chest does not attempt to re-fill.