Within the QOS section it would be great if you could nominate devices that should have low priority.

When backing up to the cloud my NAS uses all available upload bandwidth causing problems for the all other network devices, even with 'Gaming' QOS selected.

With my old Draytek router I would be able to set the Nas as low priority meaning that while other devices were using the upsteam bandwidth the Nas was unable to hog the upsteam and cause network latency and packetloss.