Are you kidding?. Ability to modify /etc/hosts and specifying exact Capabilities is awesome. Thanks for the great work. I for one waited very long for this :)
Glad I'm not the only one. I maintain an embedded system and a bunch of its apps - at every point in the Docker file where mknod & friends must do their thing, I have to cut the Dockerfile right there and do docker run --privileged for that build step... and so on.
It hasn't bothered me enough to comment on that issue though, Docker has really improved my workflow enormously.