I was so glad that 5.0.9 restored the "Edit as New" function--I have used it alot, and I consider the period between 5.0.6 to 5.0.9 the 'dark time'.
With that in mind, and to extend some of what soxfan said, you can:
- Create or nominate a user to be the template manager
- The template manager creates or copies emails into a template folder
- The template manager can share out the template folder, and you can give "View" only access if you don't want the folder modified by general users
- After accepting the share, users can go to the folder and right-click on the desired template and select "Edit as New"
- Et Voilą!
It worked for me just now, YMMV.
Enjoy!
Chris @ Purohit Navigation