Just came here from this thread Introducing templates, for Tasks! - #12 by Phil_Seeman and this feature request seems to get not as much attention as deserved.
When working with client projects this is such a powerful feature.
Some background information about our situation
We run a marketing agency, each client has it’s own Asana project.
Each client has different combination of tasks, yet for many clients the same task descriptions apply. For example, we have a standard checklist for creating a blog, or a landing page.
Many clients have the same task, yet it only happens once. So it makes no sense to create a template within the client project.
We would like to improve our workflows by enhancing template tasks over time. So when updating a template this week, we would like to enjoy that improved task template next week in a different project.
Hope this helps to understand the power of Organisation-Wide Templates.