The feature I would like to request is shown in the image below.
This feature is requested very frequently by our customers who use FlexSim to simulate material handling.
I have read this post, I understand that this problem can be partially solved by using the palette created by @Joerg Vogel, but it is not a complete solution because it cannot be handled in the same way as the normal pallet, for example, it cannot be divided by separators and items cannot be referenced by subnodes.
So I would like to request that such a pallet stacking system be implemented as a default feature.