Let me rephrase, "I cannot think of any other cryptocurrency that needs requires QoS.
Which of course includes Monero. It does't have a QoS now, and is up and running.
I only questioned QoS because fluffypony brought it up. If it is not that important I will stop talking about it.
The context was various areas of development that are being done via an open process with progress visible in github. How that turned into a discussion of which coins have or need QoS I have no idea.
BTW, here is an open issue for Bitcoin from 2011. This is not a new issue at all. In practice most people end up working around the missing feature by programming it into their router or OS network layer.
https://github.com/bitcoin/bitcoin/issues/273