BuddyPress.org

It is indeed for something else, but it gives you the strategy. A function like

function my_custom_query_filter( $query_string ) {

$query_string .= '&per_page=35';



return $query_string;

}

add_filter( 'bp_dtheme_ajax_querystring', 'my_custom_query_filter' );

does something pretty close to what you want.