The ability for Managed templates to control deletion and reordering of items

Description

Currently when it comes to items, managed templates can only add new items to connected instances. It would be nice for there to be a setting where you can choose what a managed template controls, for example the ability for a managed template to also, delete, edit and reorder items from connected instances.

What are you trying to achieve

My use case is a board that tracks the training someone has done, and each person has their own board created from a managed template.
Since after a while trainings are updated and changed, it would be nice to be able to remove and/or edit them in the template and this be reflected in individual boards.