The Delving Raid, the new Artifact CTF system, indeed the Ettenmoors itself is all derivative of DAOC. Turbine has said they were fans of that game, but if I remember from some dev chat interviews they only have *one* kinda "hardcore-ish" PvP fan on the team so he usually gets over-ruled with more important things on the "to do" list.

PvMP seems to be getting more popular even on my small-ish server, and we have entire guilds who *only* play the PvP game, so hopefully we'll start seeing more attention put into this sphere of the game.