I would add the ability to modify/close tickets too
I've just run into this same issue. Would be great to automate the creation of child tickets in the background.
Tasks just aren't as good as tickets currently:
Yeah I would also like this function. Tasks sit within a ticket, that will exist on one group's board. Not every agent will have access to that board. The group that a task is assigned to, might also want to create their own sub tasks for their work in their step of the workflow, and so that is not achievable if all they have to begin with is a task.