For the sake of modpack creators, I believe the following items should be changed to use tags instead of being hard coded:
The item used to make spectres spectatable(Currently only Allurite Shard), the item used in the preserving template recipe(Currently only Pink Salt Shard), the item used for charging Warp Anchors(Currently only Allurite Blocks), and the item used to activate the Monstrometer(Currently only lumiere block)