Anchor point translation properties for display blocks

As a player, I really like the item positioning changes for the shelves in 25w32a though I feel like that take is controversial. Therefore, whatever the default size and position for displayed items ends up being, I would like to be able to control the anchor point translation, rotation, and scale factors for items inside shelves (and possibly item frames too) from within the template model for the block type independently from modifying the display of items in item frames and individual block model data.

I propose adding a separate "item_anchor" display property group on the shelf/item frame template block model with its own rotation, translation, and scale factors. These properties could work either additively or multiplicatively to the individual translation, rotation, and scale factors configured on the individual models while allowing resource pack creators and users to choose their preference on how these blocks are displayed.