Explain your idea

Ability to change which item will be consumed for chunk loader operation with config or datapacks.

Perhaps the most interesting way would be to add a tag, such as chunk_loader_items, where you can add a list of items that would be consumed in a multiblock.

The paper was explicitly chosen as an output for data recording; it's a stylistic choice. What items would thematically even replace paper with how the chunkloader is designed?

That doesn't change the fact that some modpacks would like more freedom for customization, even if it's a stylistic choice

IE is a mod with a defined sense of style. What purpose would it serve the mod to warp a specific stylistic choice to allow for modpacks to require you to stuff Enderic Compound into the chunkloader? Most chunkloaders are entirely free in this day and age.

EDIT: Now that I think about it, the second argument (about chunkloaders being free) makes it so that this matters less; most people won't use the IE chunkloader in the first place so the people who are going to decide to make it enderic compound are probably just not going to bother to configure it. This change is probably fine.