It would be good if the Preside core supports website logins out of the box. It is obvious that most projects will overwrite the views - but get at least a help to kickstart the implementation of frontend authentication. It should use vanilla bootstrap, much the same concept as used for the main elements that already exist (header, homepage, standard page, etc.)
The stubs are already there and the handlers+logic is implemented anyway.
What is missing:
reset password form
forgotten password form
login/logout link in navigation, optionally showing the full website user name if logged in