Right. See http://wiki.mikrotik.com/wiki/Packet_Flow to clear that input/output question.
Anyway you could use parent=ADSL instead of global-out.
And you can check this out: http://mum.mikrotik.com/presentations/US08/janism.pdf
And here are the links about queues I have collected: http://forum.mikrotik.com/t/tree-queues-and-traffic-priority/25135/3
http://forum.mikrotik.com/viewtopic.php?f=13&t=29211&start=0