The classic way to offload items from a belt to a chest/assembler/etc. is [belt-inserter-assembler]. How hard would it be to add [loader facing belt direction-loader facing assembler-assembler]? Basically, the first loader act like a splitter, alternating between sending items down the belt and sending (stacked) items to the loader(s) beside it, which then unstack the items and offload them into the chest/assembler/etc.

Does that make sense?

If I understand your suggestion correctly, implementing it would not be feasible with the current design of this mod. When two loaders are placed facing each other, a runtime script detects this configuration and introduces an invisible crafter that alters items from unstacked to stacked form, or vice versa. Thus, implementing your idea might not be possible with the current setup. If I've grasped your concept accurately, please know that I am actively exploring solutions to enable inserters to interact directly with items on the conveyor belt. However, this is still in the testing phase to ensure that the performance remains optimal despite the modifications introduced by the mod.
Thank you for the feedback let me know if you have anymore questions or ideas!

Thank you for your response and your grace at my poor attempt at explaining it. For my idea--behind the scenes--the first loader would detect the second loader beside it, then create the invisible crafter, which would a stacked item--the rest would continue down the belt--and the crafter in turn would then pass the unstacked items to the second loader, which would then load them into the chest/assembler/etc., as usual. The only difference from how it currently works is that most of the stacked items continue down the belt while one of them is passed on to the side loader(s).

Does that make it clearer? (I apologize for not explaining it better; I'm under a lot of stress right now and not able to think clearly.)

No need to worry about the lack of clarity; conveying ideas solely through text can be challenging. I've uploaded some images here for better illustration. Please review them and let me know if the first image aligns with what you're describing.

Implementing the configurations from the first image might not be feasible with my current setup, but I believe a similar approach could be possible. The second image provides a more detailed view of the current implementation, while the third showcases a feature that currently functions but wasn't part of my initial design intentions. While I don't find it problematic that this feature works, it's important to note that it was an unintended aspect of the system.

I hope you're feeling better, and I wish you relief from your stress. If you'd like, we can discuss this further in a voice call let me know. I want to fully understand your idea, as it seems achievable, albeit perhaps not precisely as envisioned, due to the technical limitations of my implementation and the game's API for mod development.