1) I found it interesting that an end-user can remove themselves from a project. It seems like a user could easily add someone else and remove themselves from a task without permission from the project manager. There should be some work flow around this that requires a PM to approve any changes to a project.
2) Also, it would be nice to have some options/settings around notifications to users about upcoming tasks.
3) And finally - is there some documentation regarding the use of the template files; specifically the excel XLT file? Parts of it are self explanatory, but some of it is unclear: like how the Item columns (A-E) are used, and how the Title and Date fields are used.