Of course, with all those complicated mechanics going on inside to support this behavior, there isn't as much room left for storage; the terminal chest only holds 8 stacks of items. But that doesn't matter to you, does it, because your improved stack size inserters are busy unloading from it... right?
Note that like other mods that involve scripted behavior for objects, terminal chests won't work if a construction bot places it: the player must place it manually. Hopefully this will change when the devs give us more mod interfaces. Sorry.
![Smile :)](./images/smilies/icon_e_smile.gif)