yep, I claim objectives (usually camps) for ArenaNet in WvW, just to do this, and give all the NPCs at the objective the ArenaNet tag on their nameplate :)
Now I want to see an Anet vs players wvw session… do you think enough people at Anet play wvw?
We used to have a WvW stream every week where the WvW team and a guest dev would go into WvW tagged up. I think that stopped when the main person doing it got promoted to a lead and didn't have time for it any more though. More recently (maybe 6 months ago) the engineering team did go into WvW together with a bunch of minion mancers to maximize the number of Anet tags, but nothing in any way organized in a while.