Is your feature request related to a problem? Please describe.
I'm attempting to make an altar based crafting system for a modpack in 1.16.5, with items acting as "catalysts". However sometimes I want to use more than just one item (sometimes up to 16). Rather than force the player to make 16 pedestals on top of other items, allowing the pedestal or crafting core to hold more than a one item stack at a time would help with this. Crafttweaker already allows you to make such recipes, however datapacks don't. When using the recipe from crafttweaker with larger itemstacks, it will allow the recipe to process with only one item in the pedestal.

Another benefit of this would be that bulk crafting in this system would become easier. You can set a stack of 64 items in each slot and let the machine craft 64 times. This would also mean that the resulting item would need to go in a new slot on the crafting core, or instead be spat out at the end of the recipe as an entity. Or only make this change to the pillars, and leave the stack size limit of one on the crafting core. Though this is less idea

Describe the solution you'd like
Increase the maximum allow stack size on pedestal and the crafting core to the items native max stack size (64, 16, or 1 accordingly), and allow stacks greater than one to be used as an ingredient.

Allows for recipes like this:

Describe alternatives you've considered
Ive debated using other mods for this purpose, however they often have other content i don't want (and dont want to delete the whole mod for one system), or are buggy (Malum altar has been done, mystical agriculture is not an option, neither is draconic evolution.)

Also no other crafting system in this mod quite fits the flavor I'm looking for. Basically going for a thaumcraft 4 infusion altar type of crafting.

Additional context
I am working in the 1.16.5 version of the mod. So would be wonderful if this change was added to this version as well. It could even be a config option for the pillars if people want to only allow stack sizes of one. I can try to implement this myself for 1.16.5 if needed, but its kind of a big change so I'd understand not wanting that.

Allowing recipes like this would also be helpful. (allowing greater than one stack size on the crafting core itself as well)

I like this idea. I'm not sure when I'll implement this but it won't be for 1.16 unfortunately.