Better registration integration

I have a couple issues/requests regarding registration. First, it would be nice if the plugin honors the WP setting concerning whether or not to allow user registrations. I temporarily “fixed” this by changing line 101 in file “includes/plugin.auth.php” from
else{
to this
else if(get_option('users_can_register')){
and adding these lines at the end of that “else if” block

else {
  die("User registration disabled.");
}

Second, and this is definitely a tougher issue, would be to drop the automatic user creation and simply redirect the user to register using the normal WP registration process and pre-fill fields as available from the Provider. I don’t know what affect this would have on “linking” the account created by WP with the ability to login using a social network (especially those that may not use e-mail address as the identifier).