On the contrary I think there are tons of fun PvP things warlocks can do. For example Saturday night I went with a ~30 person raid from Southshore to Tauren Mill. Pretty fun stuff. There was another warlock in our crew lvl33 or so and me lvl30 warlock. Our strat was pretty funny. The undead crew protecting Tauren Mill (players not NPCs) would stand roughly 30 yards from the entrance to Tauren Mill where the lvl50 elite guards were standing. The lvl33 Warlock and I used our Imps to first target the Guards standing by the entrance and send the Imps in from a very safe distance. When they got behind the mob of undead we would then switch targets to a single undead from the group. Because the Imps would be attacking them from behind they would usually turn around like what the fuck. When they turned we would then run in and apply our insta DoTs. He was usually toast relatively quickly. The adds we would get from trying to get into DoT range would be kited, and usually killed depending on which way he ran, by either me or the other warlock, or someone from the Raid group when he uncontrollably ran into the center of the alliance pack. It was a blast and it’s just the tip of the iceberg as to what Warlocks can do in group PvP.