If GUID was exposed on item granters and Verse could see it in item spawners and item granters, we could filter items in a clear manner without needing an instigator first and the conditional button.
This can unlock many avenues for tracking specific item data and allowing events to happen based on the item type.
From the item spawner:
Agreed
I’ve just hit something that sounds so simple yet is not
If i want to remove an item then i either need to have 1 conditional button per item or 1 item remover per item.
They should also allow us to remove items at index in the item remover for instance a bit like how the item granter works at item index and agent but instead could be item remover item index and agent.
This could also be direct to what you saying here so we wouldn’t need a device in the first place 
and just get the agent and remove item with the unique item code
