I've a feeling document management could get difficult with many files, and I'd like to see templates being editable outside the text form, but both of these are easily added features; the foundations seem sound.
But when you download the images they are not editable because if they are in jpg or gif format, you can't make changes.
Having editable pages means that people can sign up themselves.
This alleviates the stress of keeping separate editable vector files for your images and offers unlimited access to make changes to the image.
While it would be nice to be able to bring PSD files into Illustrator with editable text, this feature is quite useful all the same.
PowerPoint files are editable by anyone else who has PowerPoint installed on their machine.
Incoming Photoshop files come with layers intact, including editable text and effects layers, so there are no worries about losing the ability to go back and make changes.
The greatest part of this is that the type is still fully editable in the original file.
Likewise, exported Fireworks files opened in Photoshop retain editable text, effects, layers and masks.
A website administrator will configure editable areas in web pages, so that a user can only edit certain areas of the site, such as particular areas of text content and certain images.