I don't know if it can be possible, but I think a category All structures is good, like Java recently added. 🏾‍ (Sry for my english )

This could be cool, but it would be a category for Unofficial Category Extensions, so I suggest going there with your idea.

has been suggested in uce but there's no definitive bounding box for structures that you can see in bedrock

ohhh ok ok thank you for the explantation 👍🏾