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• Not able to configure certain backpacks can be found in loot chests in the config

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• Able to configure specific backpacks to where they can be found, similar to which mobs can spawn with specific backpacks
• Able to set the percentage of chance that specific backpack can be found in the particular loot chest

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• Honestly can't think of any, I'm sorry

Additional context

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• Much like how the wiki's Loot page shows difference structures, backpacks and their chances would be extremely nice to be able to configure this in the config for each structure (so I can only allow my players on my server to get specific backpacks in certain locations found via exploring)

Config Example:

"world": {
		// Enables backpacks spawning in loot chests
		"enableLoot": true,
		// List of loot tables by structures, add/remove entries if backpacks are/not part of loot table
		"mineshaft": [
			"travelersbackpack:blaze",
			"travelersbackpack:squid",
			"travelersbackpack:sponge",
			"travelersbackpack:bat",
		],
		"ancientCity": [],
		"stronghold": [
			"travelersbackpack:sponge",
			"travelersbackpack:bat",
		],
		"burriedTressure": [
			"travelersbackpack:standard",
		],
		// Enables chance to spawn Zombie, Skeleton, Wither Skeleton, Piglin or Enderman with random backpack equipped
		"spawnEntitiesWithBackpack": false,

Note

• Not sure how would write in the chances in example

I think you can disable all backpack loot from the mod and create datapacks to add backpack to loot on your own rules