While browsing
https://lotrobuild.com/titles, which (I believe) uses datamined data from the game client, I stumbled upon a strange type of Deed. Basically for all of the classic classes, plus Warden and Rune-keeper, there are these various deeds fo the form "<Class> Killer / Butcher / Slayer / Murderer / Executioner of <Region>" for Forochel, Angmar, and Eregion. Just do a search for <class> and you'll see them.
I cannot think of what these are possibly for except Monster Play Deeds, rewarded for killing numbers of certain classes in certain regions.
But Monster Play has never been allowed outside of the Ettenmoors and Osgiliath.
The fact that it's the classic classes, plus Warden and Runekeeper, but not Beorning or Brawler, suggests to me that this system was something being considered in advance of Moria coming out. Especially given that at the time, Angmar, Forochel, and Eregion were the highest level zones.
Obviously this notion was abandoned before Beorning and Brawler came out. Does anyone know if Turbine ever said anything about this? Is this old news?