It would be nice if there could be a test server that would let us try the new things for a week before major patch release and help iron out any big bug. As a reward for participating we could receive something on the PVP or PVE server (depending of where we want it).
I remember Elite Dangerous was doing that for some time and then stopped. And earlier in September they release a very messy patch and after listening to the community they decided to re-implement the test server.