Creating new dynamic menu including BP links

Perhaps I have missed something fundamental, but I am attempting to include the various dynamic menu items included with BuddyPress and other add-ons to my primary drop-down menu.

For example, the Twenty Eleven WP theme has a tall header with a drop-down menu beneath the header. This menu can be manipulated via the Appearance->Menus option in wp-admin. BuddyPress adds its own menu items to the admin bar at the top of the page but does not include these links in the drop-down menu below the header. I would like to remove the admin bar completely and relocate all dynamic links to the drop-down menu.

I have already created a custom menu in the functions.php file:

function register_my_menus() {
  register_nav_menus(
  array( 
  'header-menu' => __( 'Nav Menu' )
  )
 );
}
add_action( 'init', 'register_my_menus' );

And this menu is loaded in the header.php with:

<?php wp_nav_menu( array( 'theme_location' => 'header-menu' ) ); ?>

I am able to add individual links to this menu using the wp_nav_menu_items function, but cannot seem to be able to replicate the dynamic menu structure created by the bp_nav functionality based on user.

Does anyone have ideas on how I could relocate this functionality? Or perhaps am I looking at the menu structure incorrectly?