How about this for bbPress:
function goto_home() {
wp_redirect(get_option('siteurl'));
}
add_action('bbp_feed', 'goto_home', 1);
@whyknott, are you using bbPress or only BuddyPress. I didn’t see anything in what you posted above that would disable bbPress feeds.
Actually, for my purposes the redirect actually works better for all the disables that wp_die() which appears to result in a funny page that some browser still think is an XML page. Does anyone know of a downside in using wp_redirect() here?