Stacking for Vanilla entities
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Is it Deadlock's stacking or yours one?
lol .. well I have used the base mod by DeadLock and ShaneMadden (https://mods.factorio.com/mod/deadlock-beltboxes-loaders) and expanded on it a lot.
They did leave a nice API system that could be used freely by anyone to extend their game play.
