oh sorry - the <!-- System:Login --> widget
Ahh Yes. That one has also been planned, for a long time, I just never did it.
I'm actually planning on breaking it apart, so rather than having a seperate template file for it, you would just be able to put it in the layout file directly, specifiying where it's core components would go.
So as a few examples:
<!--Login:LoginInput--> = the login field
<!--Login:PasswordInput--> = The password field
<!--Login:Characters--> = the list of characters
<!--Login:PasswordRecovery--> = The password recovery link
I assume that's something you're envisioning.