Tasklists templates in Projects

Tasklists templates in Projects

Hi,
Even though a useful feature, tasklists template remain difficult to manage. I finally found how to create a tasklist and then turn it into a template, but where can I edit or delete those templates ? After adding another task to my sample tasklist I chose again "add to template" but I now have 2 templates with similar names, and now way to know what's in which.
Also, do you have or plan to have a "task template" or at least a way to duplicate a task in its owner(s) and dates ?
Nice tool but rather slow to use for us, and user-friendly aspects to improve...
Regards.