Repeat Tasks with Templates

I would love to have the option to either copy a "task" and it's "checklist" or create a template for tasks that I do often but not on a repeating schedule. For example, I have a task to edit a client's images. Within that task are several steps that I have broken down into a checklist. I have to do this sort of task regularly. Rather than having to make a new task and new check list every time, it would be much more efficient to be able to drag a template task with the checklist already integrated, or copy a previous, similar task to create the new one.