Although a documentation doesn't describe it, tagged services can be injected via

$definition->replaceArgument(1, $arrayOfTransportDefinitions);

In all of cases I worked, a service would ever accept only one type of tagged services. Can this be used to have services autowired like this:

class TransportChain
{
    public function __construct(LoggerInterface $logger, TransportInterface ...$transports)
    {
        // ....
    }

This way user would not have to write compiler pass, giving better experience. The con is lack of injecting multiple tagged services but I don't think users do it anyway.