BP_avatar_widget

function pmpro_my_get_paying_member_ids() 
{
	global $pmpro_levels;
	global $wpdb;

	$user_ids = array();
	$paying_levels = array();

	foreach( $pmpro_levels as $level ) {

		$cost = $level->initial_payment + $level->billing_amount + $level->trial_amount;

		// Find membership level(s) that require some sort of payment.
		if ( (float)$cost > 0.00 ) {
			$paying_levels[] = $level->id;
		}
	}

	// Grab all user IDs for users who have paying membership levels.
	$user_sql = $wpdb->prepare("
		SELECT u.ID AS id
		FROM {$wpdb->users} as u
	    INNER JOIN {$wpdb->pmpro_memberships_users} as m
	    	ON (m.user_id = u.ID)
            AND m.id IN (%s)
            AND m.status = 'active'",
		explode(",", $paying_levels)
	);

	$users = $wpdb->get_results($user_sql);

	foreach( $users as $u ) {
		$user_ids[] = $u->id;
	}

	return $user_ids;
}

function my_bp_set_args_for_bp_query($args) 
{
	$args['include'] = pmpro_my_get_paying_member_ids();

	return $args;
}

add_filter('bp_member_with_uploaded_avatar_query_args', 'my_set_args_for_bp_query', 10);