Ask not what your rogue can do for you; ask what it can do for your entire raid team.
Here’s an exchange that PvP cap’n Brian Holinka had with players on Twitter earlier today around some planned DPS nerfs to Death Knights. I’ve got no deep/useful analysis to provide here, except maybe to note the glimpse this gives us into just how complex class-change decisions can be, no matter how small they seem. It’s also an important reminder of how, sometimes, a change that we may think is a slam-dunk ends up having entirely unexpected consequences in PvE and PvP situations.
[UPDATE 5/9:] Ghostcrawler added these responses a bit later on.